what is the answer i will give brainllest

What Is The Answer I Will Give Brainllest

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Answer 1

Answer:

This is a single replacement reaction


Related Questions

review the procedure. is it necessary to know the exact volume of: (a) hydrogen peroxide solution added to the flask in step 7? (b) water added to the flask in step 8? why or why not?

Answers

The exact volume of peroxide is needed to be added because it is helpful in knowing about the concentration of the analyte similarly water also should be added knowing its exact volume as it improves the accuracy of the answer required.

a) It is important to know the exact volume of peroxide to be added to the flask in order to ensure that the correct amount of peroxide is used in the reaction and that the reaction has the desired outcome.

By knowing the exact volume of peroxide, the chemist can also ensure that there is no excess peroxide that could cause a dangerous reaction. Additionally, if the correct amount of peroxide is not used, the reaction may not occur correctly or may yield unwanted products. Knowing the exact volume of peroxide also helps the chemist control the reaction rate and the desired product yields. Finally, using the correct amount of peroxide can help prevent contamination of the reaction mixture.

b) It is necessary to know the exact volume of water to be added to the flask for a number of reasons. First, accurate measurement of volume helps to ensure the accuracy of the results from the experiment. If too much or too little water is added, it can skew the results or cause the experiment to fail.

Second, the volume of water will affect the rate of temperature change. If too little or too much water is added, the temperature change may not be as dramatic as desired, or it may take too long to reach the desired temperature.

Finally, the volume of water will affect the amount of energy required to heat the water up. If too much water is added, it can take a long time and require a lot of energy to heat the water to the desired temperature. Knowing the exact volume of water to be added to the flask is critical to ensure the experiment is successful and the results are accurate.

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long-term potentiation may be involved in long-term memory. choose all of the following that are molecular changes that occur in long-term potentiation. multiple select question. a decrease in the number of nmda receptors entrance of calcium into the dendrite binding of glutamate to nmda receptors the release of nitric oxide which triggers more glutamate release

Answers

The correct ones are:

the release of nitric oxide which triggers more glutamate releasebinding of glutamate to NMDA receptorsentrance of calcium into the dendrite

Long-term potentiation (LTP) is a process that involves the continuous strengthening of synapses, resulting in a long-term increase in signal transmission between neurons. It is a critical step in the process of synaptic plasticity. LTP recording is widely accepted as a cellular model for memory research.

Simple tasks can be taught to rats and mice. A mouse, for example, will swim around in a pool of murky water until it finds a hidden platform to climb out on. Long-term potentiation (LTP) of synaptic strength between hippocampal neurons is linked to learning and memory, and memory loss is thought to be caused by LTP dysfunction. LTP can be divided into two types: decaying (early-phase) LTP and nondecaying (late-phase) LTP.

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What do the edifices made from the hot water vent look like and what are they made of?.

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The concept of rising hot water applies to water heaters, which might be vertical or horizontal vent ducts. Air exhaust from water heaters should be removed. The gas fumes are not necessary for the vents.

Water heaters need to be vented outside since the exhaust gas needs to leave the heaters and the vent runs right through their walls. In order to avoid potentially harmful effects, the residual gas fumes must be evacuated out through the vent pipes while the fuel is being burned. The vents can be run horizontally to the outside of the house and do not depend on hot air's buoyancy. As a result, the edifices from the hot water vent have an edifice-like appearance and are constructed of insulators and polymers.

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write the chemical reaction that occurs between the two reacting species. include physical states. molecular equation: what volume of the solution is needed to completely react all 7.05 g of zinc powder? volume: l calculate the molarity of the zn2 ions in solution after the reaction. concentration: m

Answers

Zn(s) + Pb(NO3)2,(aq)⇄ Zn(NO3)2,(aq) + Pb(s) is the chemical reaction that occurs between the two reacting species. include physical states.

One or more chemicals (the reactants) transform into one or more new substances through a chemical reaction (the products). Chemical parts or chemical elements make up substances. In a chemical reaction, the atoms that make up the reactants are rearranged to produce various products.

Chemical reactions are vital to life itself, as well as to technology and culture. The burning of fuels, the smelting of iron, the creation of glass and pottery, the brewing of beer and wine, and the making of cheese are a few instances of ancient processes that entailed chemical reactions. The Earth's geology, atmosphere, oceans, and a variety of intricate processes that take place in all living systems are rife with chemical reactions.

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what is the concentration of the hydroxide ion given that the concentration of the hydronium ion is 1.5 x 10-5 m? group of answer choices 1.0 × 10-14 m 1.5 × 109 m 6.7 × 10-10 m 1.0 × 10-19 m none of the above

Answers

The concentration of hydroxide ion is 6.7 × 10⁻¹⁰ M.

Water dissociates and forms an equilibrium reaction to give its ionic products  hydronium ion and hydroxide ion. The reaction is given as:

H₂O + H₂O ⇄ H₃O⁺ + OH⁻

The ionic product of water is referred to as Kw, whose value is

Kw =  1 × 10⁻¹⁴ M²

And Kw is equal to the product of the hydroxide ion and hydronium ion concentration.

Kw = [H₃O⁺ ] [OH⁻]

We are given, the hydronium ion concentration is 1.5 × 10⁻⁵ M

So, hydroxide ion concentration can be calculated as:

Kw = [H₃O⁺ ] [OH⁻]

[OH⁻] = Kw/ [H₃O⁺ ]

[OH⁻] =  1 × 10⁻¹⁴ M² / 1.5 × 10⁻⁵ M

[OH⁻] = 6.7 × 10⁻¹⁰ M

Thus, the concentration of hydroxide ion is 6.7 × 10⁻¹⁰ M

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medical gamma imaging is most often done with the technetium isotope 99tc, which decays by emitting a gamma-ray photon with energy 140 kev. what is the mass loss of the nucleus upon emission of this gamma ray?

Answers

The mass loss of the nucleus emission of this gamma ray is 1.5 × 10⁻⁴ amu.

given that :

the energy = 140 keV 140000 eV

the energy and mass expression is given as :

e = m c²

where,

m = mass

c , speed of light = 3 × 10⁸ m/s

m = e / c²

m = e / 931.4 × 10⁶ amu

m = 140000 / 931.4 × 10⁶ amu

m = 1.5 × 10⁻⁴ amu

Thus, Medical gamma imaging is most often done with the technetium isotope 99tc, which decays by emitting a gamma-ray photon with energy 140 kev.  the mass loss of the nucleus upon emission of this gamma ray  in amu is 1.5 × 10⁻⁴ amu.

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an open flask sitting in a lab refrigerator looks empty, but it is actually filled with a mixture of gases called air. if the flask volume is 3.00 l,3.00 l, and the air is at standard temperature and pressure, how many gaseous molecules does the flask contain?

Answers

At standard temperature and pressure, the number of gaseous molecules in the flask is 9.409 × [tex]10^{22}[/tex] and the number of moles in the flask is 0.1562 moles.

What are moles?

The International System of Units uses the term "mole" (symbol: mol) to denote the amount of a substance . The quantity of a substance is a measurement of the number of elementary entities of a specific substance present in an object or sample. Exact 6.02214076 × [tex]10^{23}[/tex]elementary items are required to define a mole.

Calculations:

The volume of the flask = 3.5 L

At STP gas occupy 22.4 L volume.

Number of moles in the flask,

n = 3.5/22.4

n = 0.1562 mol.

As we know 1 mole =  6.02214076 × [tex]10^{23}[/tex]

The number of gaseous molecules in the flask will be,

= 1.562 × 6.02 × 10²³

= 9.409 × 10²²

Hence, at standard temperature and pressure, the number of gaseous molecules in the flask is 9.409 × [tex]10^{22}[/tex] and the number of moles in the flask is 0.1562 moles.

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fatty acids are subdivided into two major classes, based on the relative numbers of hydrogen and carbon atoms they contain. what are these two classes

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Most of the herbal fatty acids have a fair wide variety of carbon atoms, because their biosynthesis involves acetyl-CoA, a coenzyme wearing a -carbon-atom institution.

As the quantity of carbons in a fatty acid chain increases, so does the melting point as illustrated in the determine below. thus, shorter chain fatty acids are more likely to be liquid, whilst longer chain fatty acids are more likely to be solid at room temperature (20-25ᐤC, 68-seventy sevenᐤF).

Fatty acids are categorised according to the presence and wide variety of double bonds of their carbon chain. Saturated fatty acids (SFA) comprise no double bonds, monounsaturated fatty acids (MUFA) comprise one, and polyunsaturated fatty acids (PUFA) comprise more than one double bond.

Fatty acids may be divided into four fashionable classes: saturated, monounsaturated, polyunsaturated, and trans fats. Saturated fatty acids and trans fat are related to an improved hazard of coronary heart ailment.

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NaHCO3 + HCI → NaCl + H₂O + CO₂
NaHCO3: 82.99 g/mol
You previously determined that a
particular sealed container holds
0.261 mol CO2 gas. What mass of
NaHCO3 is needed to generate the CO2?
Hint: Use stoichiometry

Answers

Mass of NaHCO3 is needed to generate the CO2 is 0.3043 g.

How do you find the total mass of a product?Mass of reactants equals mass of products. By inserting the word "moles" between each coefficient and formula, this equation may be read in "moles." A ratio of the moles for any two substances in an equation is known as a mole-mole factor.Thus, the mass of the reactant and the mass of the product are identical. A product is the substance created as a result of a chemical reaction, whereas a reactant is the chemical reaction of two or more elements to create a new substance.The ideal gas law, PV=nRT, can be used to determine the molar mass of a gas by substituting the definition of molar mass for n, the number of moles.

Find the attachment answer

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calculate the height of a column of ethylene glycol that would be supported by atmospheric pressure (760 mmhg). the density of ethylene glycol is 1.2 g/ml

Answers

The height of column of ethylene glycol supported by atmospheric pressure is 63.33m.

Given -

P= 760 mm Hg

p=1.2g/ml

Principle-

Any liquid can be used with this equation, not just mercury.The liquid's surface is being pressed against by atmospheric pressure. The liquid's weight is determined by the column's height and density; gravity then adds to this weight and pulls the liquid down. As a result, the downward forces on the opposing side balance the upward forces on the one side.The height of the water column supported by atmospheric pressure, which is approximately 10 meters, can be calculated by substituting the values for water.

Calculations-

[tex]Pressure =hpg[/tex]Rearranging this equation [tex]h=\frac{Pressure}{pg}[/tex]

h=760/1.2 x 10

h=760/12

=63.33 m

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for each pair of compounds, pick the one with the higher boiling point. explain your reasoning. cs2 or cse2

Answers

Due to the cancellation of the two opposing dipoles within the molecule, CO2 is a nonpolar molecule. Consequently, the modest dispersion forces are its main intermolecular forces.

What are the forces between molecules?

Intermolecular forces are those that exist between molecules. It differs from an intramolecular force—that is, a force that exists within a molecule—because of this. A force within a molecule would therefore resemble a covalent bond. Intermolecular force is the name for the force that exists between molecules.

What are instances of intermolecular forces?

Intermolecular forces operate between molecules. In contrast, intramolecular pressures are produced by molecules themselves. Intermolecular forces are less powerful than intramolecular forces. Intermolecular forces include the London dispersion force, dipole-dipole interaction, ion-dipole interaction, and van der Waals.

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which of the following does not belong on the list? a) deflation b) blowout c) saltation d) abrasion

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Saltation Since Deflation: removing and raising loose sand Blowout: powerful onshore winds create parabolic dunes Saltation is the term for the bouncing motion of sand grains caused by fluids like wind or water. Deflation: wind-driven sandblasting.

Describe deflation through an example.

The term "deflation" refers to a drop in asset prices or overall prices for products and services. When prices decrease, the phenomenon is referred to as deflation or a negative inflation rate. As prices fall, consumers' purchasing power rises, allowing them to spend the same amount of money on a greater variety of goods and services.

What does saltation mean?

The word saltation comes from the Latin word saltare, which means to leap or jump. Although the distinctiveness of saltation in water is not nearly as evident as in air, movement by saltation has also been suggested for water transport of particles towards the bed.

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why is the reduction of the nitro group completed in the second step of this sequence rather than the first?

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The action of hydrazine on carboxylic acid involves the nitro group's electron-withdrawing properties.

Since carboxylic acid is a poor electrophile and the nitro group's ability to suck electrons increases it, hydrazine can easily attack it. Aniline is a base that can affect the hydrazine's reactivity if we reduce in the first stage. A fascinating chemical is luminol, which produces light as a byproduct of oxidation. It is a component of a forensic test for blood, as seen on the CSI television program.

1.The first procedure in the production of luminol involves the reaction of hydrazine with 3-nitrophthalic acid.

2. Triethylene glycol, a solvent with a high boiling point, is added to an aqueous solution of the hydrazine salt to facilitate this reaction. After boiling out the extra water, the temperature is increased to a point where the dehydration is complete within a short period of time. Using sodium dithionite, the nitro- group of the resultant product, nitrophthalhydrazide.

3.is then converted to an amine group to create luminol.

4.Due to compound 3's enolization, which makes it soluble in alkali, the reduction is carried.

Thus, reduction of the nitro group is completed in the second step of this sequence rather than the first.  

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Your question is incomplete please find the complete question over the internet.

what generalization can you make about a single compound's rf value when tested in a series of solvents with increasing polarity

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As the RF (resonance frequency) increases, the polarity of the molecule increases as well.

Polarity is a measure of the separation of charges in a molecule. The higher the polarity, the greater the separation of charges.  This is because the higher the frequency, the more energy is transferred to the molecule, which increases the charge separation and therefore the polarity.

As the RF (resonance frequency) increases, the polarity of the molecule increases as well. This is because the higher the frequency, the more energy is transferred to the molecule, which increases the charge separation and therefore the polarity.

The increase in polarity is due to the increased energy being transferred to the molecule as the frequency increases. As the energy is absorbed, the electrons in the molecule are pulled further apart, increasing the separation of the positive and negative charges and thus increasing the polarity of the molecule. This increased polarity can be seen in the increased strength of intermolecular forces, leading to an increase in the boiling and melting points of the molecule.

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What is the difference between poisonous and venomous?

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Answer:

Explanation:

Poison is a toxin that gets into the body by inhaling, swallowing, or absorption through the skin. Venomous: it's when the toxin is injected into you.

suppose that 9.94 x 10^3 mol of hydrogen gas occupies a 1,317 ml container at 199°c. what is the pressure (in torr)?

Answers

The equation PV=nRT from the ideal gas law can be used to calculate the sample pressure. Use the conversion factor 1 atm = 760 torr to find the pressure in torr. You'll get 34,877 Torr as a result.

How to solve?

the ideal gas law equation is used to determine the pressure of the sample.

PV=nRT, where

P - the pressure of the hydrogen sample

V - the volume it occupies

n- the number of moles of gas;

R- the universal gas constant, usually given as  0.082atm⋅L/mol⋅K

T- the temperature of the gas - expressed in Kelvin

So, rearrange the ideal gas law equation to solve for

P, the pressure of the gas.

P=nRTV

Put in your values and find

P - do not forget that you need to use the volume in liters and the temperature in Kelvin

P=9.94 x 10^3 mol ⋅0.082atm⋅L/mol⋅K⋅(273.15−199)K/1.3L

P=3.4877  atm

To get the pressure in torr, you need to use the conversion factor

1 atm = 760 torr

This will get you

3.4877atm⋅760 torr/1atm=34,877torr

What distinguishes real gas from ideal gas?

Gases come in two varieties. Gases that are ideal and real. Given that an ideal gas has very small particles, nearly negligible mass, and no volume A point mass is also referred to as an ideal gas. Real gas molecules, despite being small particles with volume, occupy space.

The author of the ideal gas equation?

One equation, developed through the experimental work of many people, particularly Robert Boyle, Jacques A. C. Charles, and Joseph Gay-Lussac, relates the pressure, volume, temperature, and amount of an ideal gas.

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a solution was prepared by mixing 12.49 mg of d plus 10.00 ml of unknown containing just c, and diluting to 25.00 ml. peak areas of 5.97 and 6.38 cm2 were observed for c and d, respectively. find the concentration (mg/ml) of c in the unknown.

Answers

The concentration of A is 0.417 mg/ml.

Response factor (F) for compound "A" with response to "B" is

(Area) A / [A] = F x (Area) B / [B]

10.86 / 1.03 = F x 4.37 / 1.16

F = 2.799

Now, unknown solution has 12.49 mg of B

Final conc. of B = 12.49 mg / 25 ml = 0.4996 mg/ml

Let conc. of A = x mg / ml

Final conc. of A = 10ml / 25ml . x mg / ml

=0.4 c mg /ml

Now (Area) A = 5.97, (Area) B = 6.38

5.97 / 0.4 x = 2.799 . 6.38 / 0.4996

x = 0.417 mg/ml

Solution, in chemistry, a homogenous mixture of  or more materials in relative amounts that may be varied continuously up to what's referred to as the restrict of solubility. The term solution is typically implemented to the liquid nation of count number, but solutions of gases and solids are feasible.

Let us find out in this text. As a protracted as a liquid is made of a single substance, it remains pure and is known as a liquid. While something is added to it, it will become a solution.

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One periodic trend is Periods represent the number of energy levels in an atom model.

True or False

Answers

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, the given statement is true.

What is periodic table?

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.

One periodic trend is Periods represent the number of energy levels in an atom model. The period number represents the valence shell of an element and hence valence shell is the energy level of the element.

Therefore, the given statement is true.

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You add 100. 0 g of water at 60. 0°c to 100. 0 g of ice at 0. 00°c. Some of the ice melts and cools the water to 0. 00°c. When the ice and water mixture has come to a uniform temperature of 0°c, how much ice has melted?.

Answers

If you mix 100 g of ice at 0.00°c with 60 g of water at 60 °c, then 60 g of ice has melted. The water is cooled to 0.00°c as some of the ice melts. The ice also melted.

Ice has a melting point of 0°C, or 273K. Tungsten, which is used to create the filaments in light bulbs, is the chemical element with the highest melting point (3410°C). The temperature of the system does not rise during the melting process until after the melting point has been reached, even after all the ice has melted. Water is the primary component of the Earth's hydrosphere and the fluids of all known living things. It is an inorganic chemical with the chemical formula H2O(water) and is transparent, tasteless, odourless, and almost colourless.

H = MS(deltaT) (deltaT)

H = 100*4.184*(60-0)

H = 25104J

Now, the amount of heat needed to melt ice to 0 degrees Celsius is given by the formula delta H = 100*2.108 = 421.6J m = 24682.4/40.7*10^3 = 0.606g.

Ice melted to a total of 0.606g.

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: at low ph you may have seen high absorbance even in the control samples that never had the enzyme added to them. why? what is causing the production of glucose in these samples?

Answers

A Spectrophotometer measures enzyme activity by measuring the rate at which absorbance change. Absorbance means to measure the concentration of the product of an enzyme reaction.

How does low ph causes high absorbance?

Enzyme activity is at its maximum value at the optimum pH. As the pH value is increased above or decreased below the optimum pH the enzyme activity decreases.

So, when the medium of study is highly acidic the breaking of the bonds takes place easily. At lower pH values, the absorbance is high because the acid slows down the enzyme activity thereby changing its optimal pH and causes hydrolysis.

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methane, ch4(g), reacts with steam to give synthesis gas, a mixture of carbon monoxide and hydrogen, which is used as starting material for the synthesis of a number of organic and inorganic compounds. ch4(g) h2o(g) → co(g) h2(g) [unbalanced] what mass of hydrogen is formed if 275 l of methane (measured at stp) is converted to synthesis gas?

Answers

methane, ch4(g), reacts with steam to give synthesis gas, a mixture of carbon monoxide and hydrogen, which is used as starting material for the synthesis of a number of organic and inorganic compounds,1 mole of gas will take up 22.4 litres at STP.

Methane gas moles equal 275/22.4 = 12.27 moles.

Equation in balance: CH4 + H2O === CO + 3H2

Type of response: double replacement

Produced moles of H2 gas equal 12.27 x 3 = 36.81 moles. (Because three moles of H2 are produced from one equivalent of CH4)

Hydrogen mass is equal to 36.81 x 2.016, or 74.20 grammes.

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atmospheric stability and wind conditions control group of answer choices the vertical and horizontal dispersion of pollutants the quantity of pollution emitted into the atmosphere from industrial and mobile sources. the rate of photochemical reactions taking place. the increased use of fuel for heating or cooling

Answers

The correct answer is

atmospheric stability and wind conditions control the vertical and horizontal dispersion of pollutants.

What is meant by atmospheric stability?

Atmospheric stability is a measure of atmospheric status which determines whether or not air will rise, sink, or be neutral. In general, stability refers to air tendency to rise or to resist vertical motion.

Three Types of Stability

1. An unstable atmosphere will enhance or encourage the vertical movement of air.

2. A stable atmosphere will suppress or resist vertical motion.

3. A neutral atmosphere will neither suppress nor enhance vertical motion.

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5.provide an example of each of the following types of reactions: a.neutralization b.acid and metal c.acid and metal oxide

Answers

Answer:

Neutralization

strong acid and strong basesstrong acid and weak bases

Acid and metal

sulphuric acidnitric acid

acid and metal oxide

basic oxidesneutral oxides

Lead will react with hydrochloride acid in a ingle replacement reaction. How many mile of hydrochloric acid are needed to completely react with 0. 36 mol of lead

Answers

In order for 0.36 mol of lead to totally react, 0.72 mol of Hydrochloric acid is required.

What is the purpose of hydrochloric acid?

In the food, textile, metal, or rubber sectors, hydrogen chloride (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. When discharged into the soil, it is neutralized, and when it comes into contact with water, it hydrolyzes quickly.Low concentrations exposed over an extended period of time may damage and stain teeth. The EPA has not rated the carcinogenicity of hydrochloric acid.

Does hydrochloric acid harm people?

Chemical burns from hydrochloric acid can be extremely painful if they come into contact with epidermis or other tissues. Ingestion of hydrochloric might result in blindness. The amount of acid present determines how severe the burns.

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When the temperature of a 3. 0-l sample of a gas is dropped from 200°c to 100°c, what will be the final volume of the gas sample?.

Answers

The new volume will be, 6.0 L

[tex]P \propto \frac{1}{V}[/tex]

or,

[tex]P_1 V_1=P_2 V_2[/tex]

where,

[tex]P_1[/tex] = initial pressure = P

[tex]P_2[/tex] = final pressure = 2P

[tex]V_1[/tex] = initial volume = 3.0 L

[tex]V_2[/tex] = final volume = ?

Now put all the given values in the above equation, we get:

[tex]200P \times 3.0 L=100 P \times V_2[/tex]

[tex]V_2=6.0 \mathrm{~L}[/tex]

Thus, the new volume will be, 6 L

What is volume?

Volume is a basic physical amount. Volume is a derived amount and it expresses the three dimensional extent of an item. Volume is usually quantified numerically denote the SI derived unit, the cubic meter.

The new volume will be, 6.0 L

[tex]P \propto \frac{1}{V}[/tex]

or,

[tex]P_1 V_1=P_2 V_2[/tex]

where,

[tex]P_1[/tex] = initial pressure = P

[tex]P_2[/tex] = final pressure = 2P

[tex]V_1[/tex] = initial volume = 3.0 L

[tex]V_2[/tex] = final volume = ?

Now put all the given values in the above equation, we get:

[tex]200P \times 3.0 L=100 P \times V_2[/tex]

[tex]V_2=6.0 \mathrm{~L}[/tex]

Thus, the new volume will be, 6 L

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Partial bonding, for example, as part of a resonance hybrid, often results in structures with _____.

Answers

Fractional bond orders are frequently produced by partial bonding, such as when it's a component of a resonance hybrid.

Resonance: What does that mean?

Excitation frequency in physics when an unseen force or a buzzing system causes another system close by to vibrate more intensely at a specific operating frequency.

In the actual world, what is resonance?

Any system with a natural frequency has the potential to experience resonance. You've probably encountered a rattle or hum in your automobile that only happens when traveling at a specific pace. This is an illustration of resonant; when you alter your speed, the period of a cyclical driving force the tires provide changes.

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consider equimolar samples of different ideal gases at the same volume and temperature. gas a has a higher molar mass than gas b. compare the pressures. a>b a

Answers

The ideal gas equation is PV = nRT, The pressure A =B.

Equimolar quantities of salts are taken for double salts education due to the fact the houses of the character cation or anion does no longer alternate in double salts while dissociates and if salts are not in equimolar then they could get precipitate.

An equimolar buffer is one in which the concentration of the susceptible acid (or base) is the same as the concentration of the conjugate ion.

Quantities in chemistry are commonly expressed as moles; whereas concentrations use the time period molar. A mole of some thing is the molecular weight for the compound expressed as grams.

case I

n= same , T= same , V= same Thus

i) pressures  A =B

ii) rmas speed is given by u = (3RT/M)1/2

Thus A with higher molar mass has less rms speed

 A< B

iii) average kinetic energy depends only on temperature (Average Kinetic energy = 3/2 RT)

Thus A =B as they are at same temperature

Case II

C and D are at

 n= same , M = same , V= same T(C) > T(D)

i) pressures   C>D  as P is proportional to T

ii) rms speed

 C>D as rms velocity is proportional to T

iii) average kinetic energy  C >D

Case III

n = same M = same , T = same , V of E >F

i) pressures E<F as P is inversely proprtional to V

ii) rms speed  E =F at same temperature

iii) average kinetic energy E =F

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consider equimolar samples of different ideal gases at the same volume and temperature. gas a has a higher molar mass than gas b. compare the pressures. a>b a

_________produces pyruvate. The multienzyme complex Glycolisis
Gluconeogenesis
Glycogenesis
______catalyzes the oxidative pyruvate kinase glyceraldehyde 3-phosphate dehydrogenase acetyl CoA carboxylase pyruvate dehydrogenase
______ of pyruvate to yield carbon dioxide and acetyl CoA. decarboxylation phosphorylation dehydrogenation
The overall equation for the reaction is
pyruvate + CoA + NADH + H+ acetyl CoA + NAD + + CO2 pyruvate + CoA + NAD+ + acetyl CoA + NADH + H+ +CO, pyruvate + COA + NAD+ - acetyl CoA + NADH + H+ pyruvate + COA+NAD acetyl COA+NADH+CO, +e pyruvate + CoA + NAD + CO, acetyl COA + NADH + H+
Acetyl CoA is the main form in which carbon compounds enter the_______
Cori cycle. citric acid cycle. electron-transport chain. Calvin cycle.

Answers

The answer is

1. Glycolysis produces pyruvate.

2. Pyruvate dehydrogenase catalyzes the oxidation of pyruvate kinase

3. Decarboxylation of pyruvate to yield carbon dioxide and acetyl CoA.

4. Acetyl CoA is the main form in which carbon compounds enter the

citric acid cycle.

What is Glycolysis?

Glycolysis is the process in which glucose is broken down to produce energy. It produces two molecules of pyruvate, ATP, NADH, and water. The process takes place in the cytoplasm of a cell and does not require oxygen. It occurs in both aerobic and anaerobic organisms.

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the combustion of octane, c8h18,c8h18, proceeds according to the reaction shown. 2c8h18(l) 25o2(g)⟶16co2(g) 18h2o(l) 2c8h18(l) 25o2(g)⟶16co2(g) 18h2o(l) if 442 mol442 mol of octane combusts, what volume of carbon dioxide is produced at 33.0 ∘c33.0 ∘c and 0.995 atm?

Answers

The volume of the carbon dioxide is 89323.67 L.

Given,

Moles of octane = 442 moles

The balanced chemical reaction is given as,

2C₈H₁₈ + 25O₂ → 16CO₂ + 18H₂O

2 moles of octane on reaction produces 16 moles of carbon dioxide

1 mole of octane on reaction produces 16/2 moles of carbon dioxide

442 moles of octane on reaction produces 8 × 442 moles of carbon dioxide

Moles of carbon dioxide = 3536 moles

Given:  

Pressure = 0.995 atm

Temperature = 33.0 °C

The conversion of T( °C) to T(K) is shown as follows:

T(K) = T( °C) + 273.15  

So,  

T₁ = (33.0 + 273.15) K = 306.15 K  

Using ideal gas equation as:

PV = nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

0.995 atm × V = 3536 mol × 0.0821 L.atm/K.mol × 306.15 K  

⇒V = 89323.67 L

Hence, the volume of the carbon dioxide is 89323.67 L.

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household bleach is an aqueous solution that contains 5.0% sodium hypochlorite (naocl, 74.44 g/mol) by mass. calculate the molarity of the solution that results when you dilute 10.0 ml of bleach by the addition of 100.0 ml water. assume that the density of bleach is 1.00 g/ml.

Answers

The molarity of the solution that results when making dilution from 10.0 ml of bleach by the addition of 100.0 ml water is 0.061 M.

This problem is about stoichiometry. First, we have to calculate the mass of the bleach.

The volume of bleach = V = 10.0 mLThe density = ρ = 1.00 g/mLThe mass of the bleach
m = ρV
m = 1.00 × 10.00
m = 10.0 grams

From the bleach, we can calculate the mass of sodium hypochlorite.

Mass of the bleach = m = 10.0 gThe percentage = 5.0%The mass of sodium hypochlorite = m₁[tex]percentage \:=\: \frac{m_1}{m} \times 100\%[/tex]
5% ÷ 100% = m₁ ÷ 10.0
0.05 = m₁ ÷ 10.0
m₁ = 0.05 × 10.0
m₁ = 0.5 grams

Then we can calculate the number of moles of sodium hypochlorite.

m₁ = 0.5 gramsMolar mass NaOCl = Mr = 74.44 g/molThe number of moles  
n = m₁ ÷ Mr
n = 0.5 ÷ 74.44
n = 0.0067 mol

The molarity for NaOCl

n = 0.0067 molVolume total for the solution
V = V water + V bleach
V = 100.0 mL + 10.0 m
V = 110.0 mL
V = 0.110 LMolarity
M = n ÷ V
M = 0.0067 ÷ 0.110
M = 0.061 M


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