a sample of nitrogen at 20oc in a volume of 875 ml has a pressure of 730 mm hg. what will be its pressure at 20oc if the volume is changed to 955 ml?

Answer:color change and formation of precipitate.

Explanation: The reaction of products of the chemical reaction may have different properties

0.75 volume (ml) of the sweetened tea described in example 3.14 contains the same amount of sugar (mol) as 10 ml of the soft drink in this example

It is given that the concentration of sugar in a soft drink is 0.375M It means 1L of soft drinks contains 0.375mol of sugar. Then,

1000mL = 0.375mol

1mL =0.375/1000

For 10ml

= 0.375 x 10^-3 x 10

= 0.00375mol sugar

Now, the concentration of sugar in sweetened tea is 0.05M.

This means 12 L solution (tea) contains 0.05mol of sugar.

Now, we need to find the volume of sweetened tea that has the same mass of sugar that is present in 10ml of soft drink

So, the required amount of sugar  is 0.05 mol

0.05mol sugar = 1000ml (tea)

1 mol sugar = 1000/0.05 (tea)

So,

0.00375 mol sugar = (1000x 0.00375)/0.05

= 75.0 mL (tea)

The volume of tea required is 0.75ml

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On the left side of the chemical process, the reactants are Fe2O3 and C. On the right side of the chemical process, the products are Fe and CO2.

Because the total mass of iron and oxygen in the reactants and the product are equal, the law of conservation of mass is observed.

In a chemical equation, the substance or substances to the left of the arrow are referred to as reactants. When a chemical reaction first begins, a substance is said to be the reactant.

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H3O+, or the hydronium ion, is a polyatomic ion.

It can develop in either clean water or water with an acid present. It has the chemical formula H3O+. It can also result from the fusion of an H+ ion and an H2O molecule. Three hydrogen atoms and one oxygen atom make up the hydronium ion, which has a trigonal pyramidal shape.

The ability of hydronium to remove dead skin cells and regenerate fresh skin makes it a common ingredient in skincare products. It is mostly utilized in peeling. Numerous invention applications have demonstrated that hydronium, when combined with other compounds, is effective in treating both burns and wounds.

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Under very low temperature or high pressure the gases behave the most ideally.

A theoretical gas known as an ideal gas is made up of several randomly moving point particles with no interparticle interactions. [1] Because it abides by the ideal gas law, a condensed equation of state, and is amenable to statistical mechanics analysis, the ideal gas concept is helpful. If, for instance, the interaction is totally elastic or is thought of as point-like collisions, the constraint of zero interaction can frequently be disregarded.

Many real gases behave qualitatively like an ideal gas under various temperature and pressure settings, where the gas molecules (or atoms for monatomic gases) take on the function of the ideal particles.

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Three antimicrobial compounds produced by the Bacillus sp. strain Csat isolated from pozol were identified by using the high-performance liquid chromatography and the mass spectrometry.

The three compounds were iturin, bacilysin, and chlorotetaine. Production of these compounds by CS93 could account for the medicinal properties

attributed to the pozol.

Antifungal drugs work to treat fungal infections. It can kill the fungus directly or it can prevent the growth and reproduction of the fungus.

Antifungals are available over-the-counter or by prescription and come in a variety of forms, including: creams and lotions.

Thyme, cinnamon, oregano, clove, and mint are all some examples of these kinds of oils.

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By adding missing bonds, charges, nonbonding electrons, and curved arrows, the mechanism for the given reaction is depicted in the attached image.

Mechanism of Organic Reaction An organic reaction mechanism is typically represented by the overall reaction type (which can be substitution, addition, elimination, oxidation, reduction, or rearrangement), the presence of any reactive intermediates, the nature of the initiating reagent, the presence of any catalysis facilitated by a catalyst, and, finally, its stereochemistry.

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The volume of hydrogen gas produced by Magnesium reacts with the oxygen present in the air to form magnesium oxide.

When stored, it reacts with oxygen and forms a layer of magnesium oxide on the surface. This layer of magnesium oxide is very stable and prevents further reactions between magnesium and oxygen. Clean the magnesium ribbon with sandpaper to remove this layer and expose the underlying metal to the air.

Cleaning the surface of the magnesium ribbon removes the oxide layer from the surface and effectively burns the ribbon to the desired result. Magnesium ribbons burn in the air producing intense heat and bright white light. Magnesium ribbons must be air washed before firing because of the reaction between magnesium.

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134g of NH3 is required to react with excess oxygen to make 70.5 g of NO

We need to prepare 70.5 of NO given that the percent yield is 29.8%. Therefore, the molar mass of NO is 30g/mol. Then, the number of moles of NO in 70.5g is given by,

Moles of NO = 70.5/30

Moles of NO = 2.35moles

The actual yield of NO is 2.35 moles. Then theoretical yield can be computed as follows,

The percent yield of NO=( actual yield of NO/theoretical yield of NO ) x 100

Theoretical yield of NO = (actual yield/percent yield/100)

On supplying the values we get,

Theoretical yield= 2.35/0.298

Theoretical yield = 7.88 moles

The reaction is given by

4NH₃+SO₂ ---------> 4NO + 6H₂O

4 moles of Ammonia are required to make 4 moles of NO. Then, moles of NO equals moles of NH₃ which is 7.88

Then molar mass of NH₃ = 17g/mol

Mass of NH₃ = molar mass x no of moles

Mass of NH₃ = 17x7.88

Mass of NH₃ = 134g.

Therefore 134g of NH3 is required to make 70.5g of NO.

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A galvanic cell consists of an mg electrode in a 1.0 m mg(no3)2 solution and a cd electrode in a 1.0 m cd(no3)2 solution. The overall cell reaction, E cell= 0.34v

A voltaic/Galvanic cell is an electrochemical cell. In these types of cells spontaneous reaction takes place inside it which are responsible for the conversion of chemical energy into electrical energy. Daniell cell is one of its best examples. An electrochemical cell called a galvanic cell or voltaic cell, respectively named after the scientists Luigi Galvani and Alessandro Volta, produces an electric current by spontaneous oxidation-reduction reactions. A typical device typically consists of two distinct metals that are submerged in separate beakers that each contain their own metal ions in solution and are either connected by a salt bridge or divided by a porous membrane. The voltaic pile, the first electrical battery, was created by Volta. Although a battery technically contains of several cells, the term "battery" has evolved to refer to a single galvanic cell in general usage.

E cell= 0.34v

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The amount of zinc produced is 10.83 g.

given that :

current , I = 11.7 A

time , t = 45.6 min = 2736 sec

the expression is given as :

W = ZIt

W = amount of the substance deposited

I = current in ampere = 11.7 A

t = time in sec  = 2736 sec

Z = M / nF

where,

M = molecular mass = 65.3 g/mol

n = no. of electrons = 2

F = faraday constant = 96500 C

W = (65.3 / 2 × 96500 ) 11.7 × 2736

W = 10.83 g

Thus, when molten zinc chloride (zncl2) is electrolyzed, zinc is deposited at the cathode.  the amount of zinc produced if a current of 11.7 a is passed through the electrolytic cell for 45.6 min is 10.83 g.

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Chlorine contains a total of 17 electrons which are filled in different orbitals of which 7 electrons are located in the outermost energy level or orbital.

The orbital, or fixed routes or energy levels, used by the electrons to surround the nucleus in an atom are known as orbitals. Electrons are filled in ascending energy level order. Lower energy levels fill up first as a result. The final electrons, known as valence electrons, are filled in the outermost energy levels. There is a set number of electrons that can fit in each shell. Chlorine is the seventeenth element on the periodic table and possesses 17 electrons, seven of which are in the outermost shell.

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In this extraction, acetic acid would be the first substance to mix with water.

When a substance is "extracted," it is moved from a solid or liquid into a separate solvent or phase. The method most frequently used in chemical labs is liquid-liquid extraction, which takes place in a separatory funnel.

The funnel is filled with a dissolved component solution, an immiscible solvent is added, and the two layers are shaken together. It is most typical for one layer to be an organic solvent and the other to be an aqueous one. When components migrate from one layer to the next, they are "extracted."

By taking use of the different ways that different compounds are soluble in aqueous and organic solvents, extraction is the process of extracting specific components from a mixture.

Three steps are involved in the extraction process for a mixture of diethylamine, phenol, acetic acid, and ammonia. 1. Shake the mixture after adding a powerful acid. Ladder off the watery layer. 2. Include a weak base and stir the mixture. Ladder off the watery layer. 3. Add a solid base and stir the mixture. Ladder off the watery layer.

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Redox reaction if it occurs in acidic solution

Fe2+(aq) + MnO4(aq) ----> Fe3+ (aq) + Mn2+(aq)

1-

Fe+2---->Fe+3  ....oxidation

MnO4 ------> Mn2+ reduction

2- Balance the reaction by

Balance oxidation numbers by adding electrons.

Balance charge by adding H+ (acidic solutions) or OH- (basic solutions).

Balance H atoms by adding H2O. Balancing Redox Reactions

Fe2+(aq) ---> Fe3+(aq) + e-

MnO4-(aq) + 8H+(aq) + 5e- ---> Mn2+(aq) + 4H2O

3- Net equation

5Fe2+(aq) + MnO4-(aq) + 8H+(aq) ---> 5Fe3+(aq) + Mn2+(aq) + 4H2O

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Answer: we would die

Explanation:

the pressure being so large would squash us flat.

Water is a daily necessity for human survival. We might be able to go a week without eating, but we couldn't last even three days without drinking. In addition, 70% of our bodies are made of water.

Evaporation is the process through which surface water from lakes, rivers, and oceans turns into water vapor and travels into the atmosphere with a little help from solar energy.

Through the process of transpiration, which involves the evaporation of water from plants largely through the pores in their leaves, plants lose liters of water each day.

The inert form of nitrogen gas is deposited into soils during the nitrogen fixation process from the atmosphere and surface waters, primarily through precipitation.

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72.8 x 10²³ electrons each sphere contain.

m = mass of each aluminium sphere = 0.0250 kg = 0.0250 x 1000 g 25g

M = atomic mass = 26.982 g/mol

n = number of moles

Number of moles is given as

n = m/M

n = 25/26.982

n = 0.93

N₀ = Avogadro's number = 6.023 x 10²³

N = number of atoms

Number of atoms is given as

N = n N₀

N = (0.93) (6.023 x 10²³) = 5.6 x 10²³ atoms

= number of electrons per atom = 13

= total number of electrons

Total number of electrons are given as

=  N

= (13) (5.6 x 10²³)

 = 72.8 x 10²³ electrons

The mass of an electron is roughly 1/2000 that of a neutron or proton, and it has an electric charge of 1. The letter e is typically used to represent electron charge. It is a fundamental physical constant that is used to express the 1.602 10-19 coulomb, which is the unit of naturally occurring electric charge.

Negative charge characterizes electrons. Proton and electron charges have exactly the same size but in the opposite direction. There is no charge on a neutron. Protons and electrons are drawn to one another because their charges are in opposition.

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Answer: oxidation-reduction

Explanation:

An sp2 hybrid orbital from the carbon-1 and the same from the oxygen-1 atoms combine to form the sigma bond between them.

The bond angle is approximately 120°.

The carbon-1 atom is the carbon attached to the two oxygens and the other carbon of the methyl functional group. The oxygen-1 is the carbonyl oxygen that has a double bond to carbon-1. This double bond is made up of one sigma bond and on pi bond. In order for the carbon to be attached to three atoms and be stable requires sp2 hybridization to form single bonds to the three attached atoms leaving one p-orbital available to make the pi-bond part of the double bond. Oxygen also is sp2 hybridized with the other two hybrid orbitals occupied by two pairs of nonbonding electrons. The molecular geometry associated with sp2 hybridization is trigonal planar which is flat triangular in shape with carbon-1 being in the middle. The bond angle formed between carbon-2/carbon-1/oxygen-1 will be 120° as will be the angles between carbon-2/carbon-1/oxygen-2 and oxygen-1/carbon-1/oxygen-2.

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The chemical reaction for photosynthesis is as follows:

[tex]6CO_{2} + 6H_{2} O[/tex]→[tex]C_{6} H_{12} O_{6} + 6O_{2}[/tex]

Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into oxygen and sugar energy. Photosynthesis is a process that plants and other organisms use to convert light energy into chemical energy that can then be released to fuel the organism's activities via cellular respiration.

Photosynthesis' primary function is to convert solar energy into chemical energy and then store that chemical energy for later use. This process powers the majority of the planet's living systems. Jan Ingenhousz, a Dutch-born British physician and scientist best known for discovering photosynthesis, the process by which green plants absorb carbon dioxide and release oxygen in the presence of sunlight.

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Accumulators store energy in order to carry out their duty in a hydraulic circuit using weights, water, and compressed gas.

An accumulator is a type of energy storage system that takes, stores, and then releases energy as needed. Some accumulators take in energy at a low rate over a long period of time and discharge it at a high rate over a brief period of time. The primary function of an accumulator in a CPU is as a register for holding interim logical or numeric data during multistep calculations. It serves as a temporary storage area for such calculations.

In addition to powering chassis suspensions and reducing pressure peaks, they are used to maintain pressure, store and recover energy, and dampen shock, vibration, and pulsations. Accumulators store a volume of fluid under gas pressure that can be re-fed into the hydraulic system as needed.

Variables called accumulaters are employed to combine data from various executors. For instance, this data may relate to data or API diagnosis, such as how many records are corrupted or how frequently a specific library API was used.

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There can be emissions of radiations like gamma radiation. There can be emission of particles too like alpha particle. Therefore radioactive decay of lead leads to production of bismuth. the blank can be filled with 210 and 82.

Nuclear decay is process in which the radioactive element releases particles or radiations. Alpha particles is ⁴₂He. Alpha particle is nothing but helium particle.

The balanced reaction can be written as

²¹⁰Pb [tex]_x[/tex] [tex]\rightarrow[/tex] 83[tex]Bi^y[/tex]   + ⁰₋₁ e

sum of mass number of reactant side=total sum of mass number of product

210=y+0

y=210

sum of atomic number of reactant side=total sum of atomic number of product

x=83+(-1)

x=83-1

x=82

Therefore radioactive decay of lead leads to production of bismuth. the blank can be filled with 210 and 82.

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In the video, the semipermeable membrane separates the two solutions of different concentrations.

B. The solvent can ideally move in both directions through the semipermeable membrane.

D. The movement of the solvent particles from the concentrated solution to the dilute solution is known as reverse osmosis.

Examples of solvents Water, ethanol, methanol, and acetone are a few typical examples of solvents. A substance that can dissolve a certain solute and combine with it to produce a solution is referred to as a "solvent."

Osmosis is the movement of a solvent through a semipermeable membrane to separate two solutions with different solute concentrations. Osmosis is the process by which a solvent is transferred from a solution with a lower solute concentration to one with a greater solute concentration.

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The acronym S N2 stands for substitution, nucleophilic, and bimolecular, indicating that the rate-determining step involves two molecules. S stands for substitution, N for nucleophilic, and the number two stands for bimolecular.

The solvent in which an SN2 reaction occurs has a sizable impact on the reaction's rate. Protic solvents (those capable of donating hydrogen bonds, like water or alcohol) are used to reduce the power of the nucleophile through vigorous solvation.

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Answer:

6.91 moles cesium xenon heptafluoride

Explanation:

The balanced equation

            CsF + XeF6 = CsXeF7

tells us that we should expect 1 mole of cesium xenonheptafluoride (CsXeF7) for every 1 mole of cesium fluoride consumed, a molar ratio of 1:1.  It also says we will use 1 mole of xenon hexafluoride, XeF6, for each mole of cesium fluoride.

The 6.91 moles of CsF will therefore require 6.91 moles of XeF6 to completely react.  We are in luck, since there are 8.23 moles of XeF6, more than enough to react with all the CsF.  In fact, there should be (8.23 moles - 6.91 moles =) 1.32 moles of XeF6 left over, unreacted.  CsF is the "limiting reagent:"  the reaction will stop once it is consumed.  We can assume that all of the CsF will react, so that will result in the same number of moles of CsXeF7 produced, since the molar ratio of the two is 1:1 reactant/product.

An example of supplying activation energy to a chemical reaction is striking a match to make it burn. A match's combustion is a highly exothermic energy process.

Energy-releasing processes are said to be positive since the chemical reactions end products are in a more stable and advantageous condition afterward. It's because the reactions follow a predetermined course, and that course necessitates the use of energy (known as activation energy) in order to create an activated complex chemical reaction, which will ultimately result in the synthesis of the products. This implies that in order to begin, the products must absorb some energy (the activation energy).

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As can be seen from the structures of camphor and borreol, camphor has a ketone group while borreol has groups with alcohols activities. Through hydrogen bonding, the melting point of the boreal is higher.

Alcohols' melting point and boiling points are always thinner than those of ketones. the light of the intermolecular hydrogen bond. hence, the melting point. in the boreal is higher. Waxy, combustible, and translucent solid, camphor has a potent scent. It has the terpenoid compound C10H16O in its chemical makeup. The big East Asian evergreen tree known as the camphor laurel (Cinnamomum camphora) is where you can find it. The compounds with the general formula R-OH, where R is an alkyl or a substituted alkyl group, are known as alcohols. Alcohols are hence alkane derivatives in which one or more H.

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The vapors pressure of water at 25°c is 23.76 mm hg is 23.51 mmHg.

Moles of  the sucrose is mass/molar mass

= 50.0/342.3 = 0.1461 mol

Moles of water = mass/molar mass

= 250/18.02 = 13.87 mol

Mole fraction of water = moles of water/(moles of water + moles of sucrose)

= 13.87/(13.87 + 0.1461) = 0.9896

Vapor pressure of solution = mole fraction of water x vapor pressure of water

= 0.9896 x 23.76 = 23.51 mmHg

In chemistry, a solution is a special type of homogeneous mixture composed of two or greater materials. In this sort of mixture, a solute is a substance dissolved in another substance, called a solvent.

The solution is a homogeneous aggregate of 1 or extra solutes dissolved in a solvent. solvent: the substance in which a solute dissolves to supply a homogeneous aggregate.

The constituent debris of a solution is smaller than 10-9 meters in diameter. Constituent particles of a solution can not be visible to the eye. solutions do no longer scatter a beam of mild passing through it.

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A structure containing a central atom with two electron groups, designated ax2, has a linear shape with a bond angle of 180 degrees.

In a molecular formula, the center atom is often the one with the lowest subscript and the largest bonding potential. When all of the atoms typically form the same amount of bonds, the central atom is often the one with the lowest electronegative potential. Central ions are the metal ions that the ligands attach to. Example: The core ion in K3[Fe(CN)6] is Fe3+. As Lewis acids, these core atoms and ions serve as acceptors of the electron pair.

Since C is less electronegative than O, it serves as the main atom. 2. C contains four valence electrons, and each O has six, for a total of sixteen valence electrons.

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Rate constant of reaction at 1200 K : 1.20 times 10 9 M -1 s -1

What is Rate of Reaction?

The rate of reaction in a chemical reaction is the speed at which the products are formed from the reactants. It helps us comprehend how rapidly a reaction might happen. For instance, cellulose burns exceedingly quickly in fire and the process is complete in less than a second.

The rate of reaction, also known as reaction rate, is the rate at which reactants transform into products. It should go without saying that different chemical reactions occur at different rates. While certain chemical reactions take place extremely immediately, others usually take some time to reach their final equilibrium.

Rate of reaction = k [NH 3] x [NO] y, where k is the reaction's rate constant, x is the order of the reaction with respect to NH 3, and y is the order of the reaction with respect to NO

Rate of reaction = k [NH 3 ] [ NO ]  

Rate constant of reaction at 1200 K : 1.20 times 10 9 M -1 s -1

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