a sample of xenon gas occupies a volume of 6.51 l6.51 l at 473 k.473 k. if the pressure remains constant, at what temperature will this same xenon gas sample have a volume of 3.33 l?

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the pressure in atm and torr is 148.2 atm and 1,12,632 torr respectively.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.

pressure= 14.82 mpa

              = 14.82 × 10⁶ pa

1 atm = 10⁵ pa

1 Pa = 1/10⁵ atm

pressure= 14.82 × 10⁶× 1/10⁵ atm

              = 148.2 atm

1 atm = 760 torr

pressure= 148.2 ×760 torr

              = 1,12,632 torr

Therefore, the pressure in atm and torr is 148.2 atm and 1,12,632 torr respectively.

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Calcite (caco3) is a crystal with exceptionally significant birefringence when a light wave travels through one medium to another. The right responses to the question are 42.28 and 37.08 degrees.

What do crystals and examples mean?

A few examples of everyday objects that are crystals include table salt, also known as sodium chloride and halite crystals, sugar, sometimes known as sucrose, and snowflakes. Several gemstones, such as diamond and quartz, are composed of crystals. There are numerous compounds that resemble crystals but are actually polycrystals.

Is crystal a gem?

"A crystal can't be a gemstone, but a diamond can be a crystal." In contrast to sugar, which is a gemstone but not a crystal,

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the direction of polarity of each of the covalent bonds by placing the appropriate delta notation next to each end of the bond.

a water molecule, a typical illustration of polarity. There are two charges: a negative charge in the center (red shade) and a positive charge on either side (blue shade).

A bond's polarity results from the respective electronegativities of the constituent parts. Remember that an element's ability to draw electrons to itself when it is a component of a compound is known as electronegativity.

Chemical bond are formed when two or more atoms in a compound's molecule come contact and are tightly bound together. Covalent and ionic bond are the two different kinds of chemical bonding.

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Answer:

(AN) Ammonium nitrate ( 94% )

(FO) Diesel fuel ( 6% )

Explanation:

Answer:

The main reason why air is cooled before nitrogen and oxygen are obtained is because these two gases are much more soluble in cold air than in warm air. As a result, if air were not cooled before these gases were separated, they would simply mix back together again.

The formula of ionic compound forming face centered cubic lattice will be AB₃

The face centered cubic lattice has atom  present at corner as well as all the faces of unit cell. suppose the we have two atom A and B forming FCC.

Atom present in corner contribute = 1/8

Atom present in face contribute = 1/2

A atom present in the corner = 8 x 1/8

A atom = 1 atom

B atom present in the faces of unit cell = 6 x 1/2

B atom = 3 atom

Chemical formula of ionic compound = AB₃

Hence, ionic compound exist in AB₃ formula in FCC.

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HCN(aq)+H2O⇋CN−(aq)+H3O+(aq)

This is the weak acid HCN's acid dissociation equilibrium.

A compound that creates salts when it combines with specific metals and releases hydrogen ions into water. Certain dyes are given a scarlet hue and a sour flavour by acids. Acids generated by the body, such stomach acid, can assist organ function. One type of acid is hydrochloric acid.

Organic acids and inorganic acids are the two different types of acids. Mineral acids are another name for inorganic acids.The strength of organic acids is often lower than that of inorganic acids. Although inorganic acids don't include carbon, organic acids do, which is the major distinction between the two.

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According to the chemical reaction is CaH2(s)+2H20(l). Ca (OH)2+2H2(g). Now, according to the ideal gas equation n=PV/RT=0.48. According to stoichiometry=½*0.48= 0.23 moles. So that the mass of CaH2= moles*molar mass= 0.24mol*42g/mol= 10.2g is the final answer.

PV = nRT is the equation for an ideal gas. In this equation, P stands for the ideal gas's pressure, V for the ideal gas' volume, n for the total amount of the ideal gas expressed in moles, R for the universal gas constant, and T for temperature.

The greatest amount of product that can be produced is determined by the stoichiometry of a balanced chemical equation. The relative amounts of reactants and products in a balanced chemical equation are described by a reaction's stoichiometry. You can see from the coefficients that 2 moles of CO2 are created for every 1 mole of C6H12O6. Using this proportion.

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One molecule of nh3 and one molecule of hcl combine to make NH4CL. Ionic compound describes it. In the process of neutralization, a basic solution balances out an acidic solution.

This keeps the pH at 7, which is a neutral value. The hydrogen ion and hydroxide ions are equal in this neutralized solution; nothing is in excess. Here, NH3 and HCl operate as a strong acid and a weak base, respectively, in a neutralization reaction that results in the formation of salt. The resultant salt's pH changes to 7 in this neutralization reaction. Titration aids in the neutralization's occurrence. An ionic compound in chemistry is a chemical complex made up of ions kept together by electrostatic forces is known as ionic compound.

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There are 6 hydrogens and 2 nitrogen when 3h2 reacts with N2 such that the equation follows the law of conservation of mass.

It is already balanced when N2(g) + 3H2(g) 2NH3(g). There are two nitrogens on the left and two on the right, as you can see. On the left, there are 6 hydrogens, and on the right, there are 6.

The law of conservation of mass, also known as the principle of mass conservation, in physics and chemistry states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time because the mass of the system cannot change and therefore quantity cannot be added to or subtracted.

According to the rule of conservation of mass, mass is neither generated nor destroyed during a chemical process. For instance, when coal is burned, the carbon atom in it transforms into carbon dioxide.

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Time take for a 7.50-l sample of methane (ch4) to effuse under the same conditions is 2.84 min.

Effusion is defined as a loss of cloth throughout a boundary. A commonplace instance of effusion is the lack of gasoline interior of a balloon over the years. The fee at which gases will effuse from a balloon is stricken by a number of of things.

Calculation:-

t = 4 min

V = 7.5 L

rate O₂/rate CH₄ = √MCH₄/MO₂

(7.5 L/4) / (7.5/t) =  √16/32

t/4 = 0.71

t = 2.84 min

Effluxion of time is the expiration of a rent time period due to a herbal passing of time in place of from a selected motion or event. This phrase also can be used to indicate the realization or expiration of an settlement in easy writing when the realization or expiration takes place thru a natural direction of events.

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If the surface concentration is 1018 atoms/cm3, the depth below the surface at which the concentration is 1017 atoms/cm3 is 0.32 cm.

The expression is as follows:

erf (x / 2 D t) = (Cs - Cx) / (Cs - Co)

where Cs = surface concentration = 1018 atoms/cm3

Cx = depth concentration = 1017 atoms/cm3

Co - solute concentration in solid

erf stands for error function.

(1018 - 1017) / 1018 = (Cs - Cx) / (Cs - Co)

= 0.00098

erf (x / 2 D t) = 0.00098

0.000868 = x / 2 √ 2 × 10⁻² × 5 (3600) (3600)

x = 0.32 cm

0.32 cm is the depth.

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2.8 moles of sodium bicarbonate (NaHCO3) are needed to neutralize 1.4 moles of sulfuric acid (H2SO4), considering that the balanced equation of the reaction between NaHCO3 and H2SO4 in the car battery is

2NaHCO3(s) + H2SO4(aq) → Na2SO4(aq) + 2CO2(g) + 2H2O(l)

It is observed in the stoichiometric ratio of the reaction that for every 2 moles of NaHCO3, 1 of H2SO4 is needed.

Therefore, only a rule of three is required to determine how many moles of NaHCO3 are needed to neutralize 1.4 mol of H2SO4

2 mol of NaHCO3 ----------- 1 mol of H2SO4

X mol of NaHCO3 --------- 1.4 mol of H2SO4

X = 1.4 x 2 / 1 = 2.8 moles

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In water, an element can dissolve that is least likely to be an ionic compound.

Ionic compounds typically form when metal and nonmetal elements are combined. For instance, the nonmetal chlorine (Cl) and metal calcium (Ca) combine to form the ionic compound calcium chloride.

Noble Gases are colorless gases with a very low reactivity. The noble gases are referred to as inert because they don't easily combine with other substances to form compounds. The noble gas family consists of helium, neon, argon, krypton, xenon, and radon.

Compound formation involving noble gases is extremely rare. They are incomprehensible gases that don't interact with other substances in their environment.

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In comparison to hot working, cold working uses less heating, yields a better surface polish, has greater dimensional qualities, and has fewer contamination issues.

Heat is the energy transfer that happens as a result of the temperature differential between a system and its surroundings. Heat is the energy transmission that uses or stimulates disordered molecular motion in the environment at the molecular level. Heating is the result of the movement of kinetic energy from one media or item to another, or from an energy source to a medium or object. Radiation, conduction, and convection are the three possible mechanisms for this type of energy transmission. When the temperature rises, atoms and molecules move more quickly and collide, creating thermal energy (also known as heat energy). Thermal energy is the power that results from the heated object's temperature.

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47542 amperes of electricity are needed to electrolyze Cu²⁺ to Cu  if 1.15 moles of Cu is produced in 4.8 seconds.

Using the formula w= zit

where w,

The quantity of power transported through the electrolyte directly correlates to the amount of material created at an electrode during electrolysis. W is the mass of substance produced at an electrode, and It. or W = ZIt.

W = Zit ( Q= I*t ) Where, Z = Electrochemical Equivalent. Z = atomic weight/nF (n = no. of electron, F = 96500 )

z= atomic weight/ nF

z= 63.5/ 2 * 96500

z= 0.00032

∴w = 0.00032 *i * 4.8

w= number of moles* molecular weight

w= 1.15 * 63.5

w= 73.025

73.025= 0.00032 * i * 4.8

i= 73.025/ 0.00032 * 4.8

i= 47542 ampere

Therefore 47542 amperes of electricity are needed to electrolyze Cu² to cu.

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The electronegativity of hydrogen is 2.0, while that of oxygen is 3.5.

Electronegativity is a chemical property that describes an atom's or functional group's tendency to attract electrons toward itself. An atom's electronegativity is affected by both its atomic number and the distance between its valence electrons and the charged nuclei.

It governs the distribution of shared electrons between two atoms in a bond. The greater an atom's electronegativity, the more strongly it attracts electrons in its bonds. The electronegativity of hydrogen is 2.0, while that of oxygen is 3.5. Because the difference in electronegativities is 1.5, water is a polar covalent molecule. This means that electrons are strongly attracted to the more electronegative element, but the atoms are not ionized.

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User Data is generally used to perform common automated configuration tasks and even run scripts after the instance starts. When you launch an instance in Amazon EC2, you can pass two types of user data - shell scripts and cloud-init directives. You can also pass this data into the launch wizard as plain text or as a file.

In general, a configuration is the arrangement of the components that make up a whole, or the act of creating that arrangement. A configuration, or particular shape, is produced when objects are placed in any spatial arrangement. As an illustration, scientists refer to a configuration as the particular, bound arrangement of atoms that forms a molecule.

Text, observations, figures, photos, numbers, graphs, and symbols can all be used as forms of data. Individual prices, weights, addresses, ages, names, temperatures, dates, or distances, for instance, could be included in the data. Data is an unprocessed type of knowledge and has no meaning or use by itself.

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2.19 liters of oxygen at 350 °C and at 5.25 atm are needed to convert 5.00 g of S to SO₃.

Using the equation-  S + 3/2 O₂ → SO₃

Moles of sulfur- 5/32 = 0.15 mol

Given the stoichiometry, we require- 3/2 * 0.5

Mol of dioxygen gas = 0.225 mol.

And now we solve for volume in the Ideal Gas equation as V = nRT /PV

The equation of state for a fictitious ideal gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has some restrictions, it is a good approximation of the behavior of numerous gases under various circumstances. Benoît Paul Émile Clapeyron introduced it for the first time in 1834 as a synthesis of the empirical Boyle's law, Charles' law, Avogadro's law, and Gay-Lussac's law. The empirical form of the ideal gas law is frequently used:

PV=nRT

∴V = nRT /PV

⇒0.225 mol x 0.0821L atm K⁻¹ x 623 K / 5.25

⇒V= 2.19  L

Hence, 2.19 Liters of oxygen at 350 °C and at 5.25 atm are needed to convert 5.00 g of S to SO₃.

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In the Calvin-Benson cycle, 1 molecule of CO2 requires 3 molecules of NADPH for fixation.

This is because the Calvin-Benson cycle involves the reduction of CO2 to glucose, which requires three molecules of NADPH for the reduction reactions. NADPH is a type of coenzyme that helps in providing electrons for the reduction of CO2 to glucose. So, to fix one molecule of CO2 in the Calvin-Benson cycle, three molecules of NADPH are required.

Chemical equation: 3ATP + 2 NADPH2

Also known as the reductive pentose phosphate cycle or the C3 cycle, is a series of biochemical reactions that plants use to fix carbon dioxide and produce carbohydrates.

The cycle begins with the fixation of carbon dioxide into a glycerate 3-phosphate molecule, which is then reduced to a 3-carbon sugar molecule. The sugar molecule is then converted into other molecules such as fructose 6-phosphate and ribulose 5-phosphate, which are then used to form other molecules such as glucose and starch.

Complete question:

Using the chemical equation to help you, how many nadphs are required to fix one molecule of co2 in the calvin-benson cycle?

Chemical equation: 3ATP + 2 NADPH2

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Due to the creation of complicated potassium aluminate, this reaction is complex.

The FDA classifies potassium alum as a chemical that is generally acknowledged as safe (GRAS). It is an inorganic salt with the formula AlK(SO4)2, sometimes known as potassium aluminum sulfate.

Nowadays, potassium sulfate is added to a concentrated solution of aluminium sulfate to create potassium alum in an industrial setting. Typically, sulfuric acid is used to process minerals like cryolite, bauxite, and alum schist to produce aluminum sulfate.

Breif:

2 Al ( s ) Aluminium + 2 KOH ( aq ) Potassium hydroxide + 6 H 2 O ( l ) Water → 2 K [ Al ( OH ) 4 ] ( aq ) Tetrahydroxoaluminate ( III ) or Potassium aluminate + 3 H 2 ( g ) Hydrogen.

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Due to the activity series that is given in the image, the reaction that will not take place is FeCl₂ + Br₂ , thus, option A is correct.

From the nature of the question above, we must infer the response that won't happen and as such:

2NaI + Cl₂

Because chlorine can replace iodine, this reaction will take place. Chlorine is higher on the activity series, which explains why.

Sn + H₂SO₄

Due to the fact that tin (Sn) can dispense hydrogen from the acid, this reaction will take place.

FeCl₂ + Br₂

So, since Chlorine cannot be replaced by Bromine, this reaction won't take place. This is due to Bromine's lower position on the activity series than Chlorine.

Fe(NO₃)₃ + Al

Aluminum's ability to replace iron will cause this reaction to take place. This is so that Aluminum (Al) ranks higher than Iron in the activity series (Fe).

Therefore, one can say that the  reaction is thus: FeCl₂ + Br₂ ,

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The Mass of ice is 69.12g.

What is mass?

It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.

What is temperature?

Temperature is a measure of the average kinetic energy of the particles inside an object. The temperature increases cause these particles to move more quickly. It is possible to measure temperature using a thermometer or a calorimeter.

first calculate the amount of heat as follows;

q= mass of water C= (0°C-55°C)

=100.0g (4.186J/g°c) (-55°C)

=-23023J

Heat lost by water is gained by ice,

-q=m*ΔH

-23023J= m*333J/g

= 69.12g

Therefore, Mass of ice is 69.12g.

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Mass of ice is 125.7 g

q = mass of water C water (0 - 100 degree C)

q = 100 g (4.186 j/g degree c)(-100)

q = -41860J

Heat l0st by water is gained by ice

-q = m × Δh

-(-41860) = m × 333j / g

mass of ice = 125.7 g

The quantity of matter in a sample is represented by the attribute of mass. Grams (g) and kilograms are typically used to report mass (kg).

Another way to think of mass as the characteristic that gives matter its ability to resist acceleration is as a property. Acceleration is more difficult for objects with more mass.

Weight vs. Mass

Although the terms mass and weight are not interchangeable, an object's weight depends on its mass. W is weight, m is mass, and g is the acceleration of gravity, which on Earth is approximately 9.8 m/s2. Weight is the force that a gravitational field exerts on mass. Therefore, the units of kgm/s2 or Newtons are used to report weight in a suitable manner (N). However, because the Earth is a sphere,

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a. Neutralization: strong acid and strong bases and strong acid and weak bases b. Acid and metal: sulphuric acid and nitric acid c. acid and metal oxide: basic oxides and neutral oxides.

Response to Neutralization: Strong acid and strong base reactions produce a salt that is neither acidic nor basic in nature, or neutral. For instance, sodium chloride and water are produced when HCl (hydrochloric acid), a powerful acid, combines with NaOH, a powerful base.

The interaction of H+ ions and OH- ions produces water in a neutralization reaction, which occurs when an acid and a base react to form water and a salt.

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Entropy is stated to diminish as a system switches from an ordered to a disordered layout, and vice versa. When randomness rises, ΔS  is positive.

Heat transport (delta Q) divided by temperature equals the change of entropy (delta ΔS ) (T). (Delta Q / T) = delta ΔS  If a physical process can be reversed, the entropy of the environment and the system will stay constant.

One thing to bear in mind when using any one of these equations in computations is that while ΔS  values are typically reported as J/K.mol, G and ΔH values are frequently reported in kJ/mol.

1. 2H30' (aq) + CO23- (aq) - CO2(g) +3H2O(1)

2. CH4(g) + 202,(g) - CO2(g) + 2H2O(l)

3. Mg (s) + Cl2(g) - MgCǐ2(s)

4. SO3(g) + H2O(I) - H2SO4(I)

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The change in kinetic energy when the object moves from x = 1. 00 m to x = 2. 00 m is -6.75J.

Given

Force [tex]$F(x)=2 x+x^3$[/tex]

Change in Potential Energy from x=1 to[tex]$x=2 \mathrm{~m}$[/tex] is given by

[tex]$$\begin{aligned}& \Delta U=\int F(x) d x \\& \Delta U=\int_1^2 F(x) d x \\& \Delta U=\int_1^2\left(2 x+x^3\right) d x \\& \Delta U=\left|x^2+\frac{x^4}{4}\right|_1^2 \\& \Delta U=6.75 J\end{aligned}$$[/tex]

(b)Change in Kinetic Energy

If the Force is conservative in nature then the total change in mechanical energy is zero thus

Thus [tex]$\Delta K . E .=U_1-U_2=-\Delta U=-6.75 . J$[/tex]

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Answer:

to figure out how to sustain large populations in this environment.

Answer:

The maya needed to create innovative ways to manage water because they lived in a dry climate.

They needed to find ways to collect water and store it for later use.

Explanation:

There were downpours during the unpredictable wet season and there was a long dry season

Not many rivers

To calculate the amount of heat needed to melt ice;

Q = w x Cp x ∆T {where Cp is specific heat of material}

  =100.0g (4.186J/g°c) (-60°C)

  =-25116J

Heat lost by water is gained by ice,

q = m*ΔH

-25116J = m*333J/g

q = -75.4

Therefore, Mass of ice is 75.4 g.

What is mass?

It is a dimensionless quantity that expresses a particle or object's mass. The accepted unit of mass under the International System (SI) is the kilogram.

What is temperature?

Temperature is a measure of the average kinetic energy of the particles inside an object. The temperature increases cause these particles to move more quickly. It is possible to measure temperature using a thermometer or a calorimeter.

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A fuel cell is a galvanic cell. In a hydrogen-oxygen fuel cell, hydrogen and oxygen are bubbled through porous carbon electrodes into a concentrated aqueous sodium hydroxide solution. Platinum or palladium metal that has been finely divided serves as the catalyst in this instance. at the anode. H2(g)+2OH−(aq)→2H2O(l)+2e−

The H2O2 fuel cell's basic structure consists of porous carbon electrodes with appropriate catalysts (typically finely divided platinum and palladium) integrated into them. As an electrolyte, concentrated KOH or NaOH is positioned between the electrodes.

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