a 20.00-ml sample of 0.3000 m hbr is titrated with 0.15 m naoh. what is the ph of the solution after 40.3 ml of naoh have been added to the acid? group of answer choices 10.87 1.00 3.13 13.14 11.05

Answer:

mass of NH₃ formed when 22g of H₂ react completely = 124.67 grams

Explanation:

3H₂ + N₂ → 2NH₃

The ratio of coefficients of reactants and products in the above reaction equation (3 : 1 : 2), is known as the stoichiometry of the reaction.

A stoichiometric amount of a reagent is the the optimum amount or ratio where, assuming that the reaction proceeds to completion, all of the reagent is consumed, there is no deficiency of the reagent, and there is no excess of the reagent. Thus if the stoichiometry of a reaction is known, as well as the mass of one of the substances, then it is possible to calculate the mass of any of the other substances.

The mole is a unit of amount of substance established by the International System of Units, to make expressing amounts of reactant or product in a reaction more convenient. As defined by Avogadro's Constant, a mole is 6.022×10²³ amounts of something. The mole is used in stoichiometric calculations, instead of the mass.

To convert from mass to moles, we need to divide the mass present in grams, by the molar mass of the substance (the sum of the molar masses of the individual elements comprising the compound), in g/mol, to get the moles. This can be represented by the formula: n = m/M, where n = number of moles, m = mass, M = molar mass.

So if we have 22 g of H₂ gas, which reacts completely, and therefore is a stoichiometric amount, then converting this to moles:

n(H₂) = m/M = 22/2 = 11 mol.

Using our stoichiometry, we can see that the ratio of H₂ to NH₃ = 3 : 2.

Therefore, for every 3 moles of H₂ used, we produce 2 moles of NH₃.

n(NH₃) = 2/3 × n(H₂) = 2/3 × 11 = 7.333 mol.

Finally, converting moles back to mass we get:

m(NH₃) = n×M = 7.333×17 = 124.67 grams

∴ mass of NH₃ formed when 22g of H₂ react completely = 124.67 grams

Adding precipitates to a metal alloy will likely increase its yield strength but decrease its fracture toughness True.

The addition of precipitates to a metal alloy can increase its strength by hindering dislocation movement, leading to increased yield strength. However, these same precipitates can also act as stress concentrators and promote crack initiation, leading to decreased fracture toughness. Therefore, the strength and toughness of a metal alloy are often in a trade-off relationship, where increasing one can lead to a decrease in the other.

This is an important consideration in the design of materials for different applications. For example, in structural applications where high strength is critical, such as in aerospace or automotive industries, alloys with higher yield strengths are preferred. However, in biomedical implants or prosthetics where resistance to fracture is more important, toughness is prioritized over strength.

Learn more about  dislocation movement

https://brainly.com/question/3787309

#SPJ4

, the molar concentration of the solution is 2.202 M. molar concentration of a solution that contains 45.0 g of nacl dissolved in 350.0 ml of water

To calculate the molar concentration of a solution, we need to first determine the number of moles of the solute present in the solution, and then divide that by the volume of the solution in liters.

The molar mass of NaCl is 58.44 g/mol. Therefore, the number of moles of NaCl in 45.0 g can be calculated as:

mole= mass / molar mass = 45.0 g / 58.44 g/mol = 0.7709 mol

Next, we need to convert the volume of the solution from milliliters to liters:

volume = 350.0 ml = 0.3500

Finally, we can calculate the molar concentration (M) of the solution as:

M = moles / volume = 0.7709 mol / 0.3500 L = 2.202 M

Learn more about concentration  here:

https://brainly.com/question/30665317

#SPJ11

Taking into account definition of reaction stoichiometry, 209.36 grams of Mg(OH)₂ are needed.

In first place, the balanced reaction is:

3 Mg(OH)₂ + 2 H₃PO₄ → Mg₃(PO₄)₂ + 6 H₂O

By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: If by reaction stoichiometry 196 grams of H₃PO₄ react with 174.99 grams of Mg(OH)₂, 2.345×10² grams of H₃PO₄ react with how much mass of Mg(OH)₂?

mass of Mg(OH)₂= (2.345×10² grams of H₃PO₄× 174.99 grams of Mg(OH)₂)÷ 196 grams of H₃PO₄

mass of Mg(OH)₂= 209.36 grams

Finally, 209.36 grams of Mg(OH)₂ is required.

Learn more about reaction stoichiometry:

brainly.com/question/24741074

#SPJ1

The types of water that could be analyzed for trace amounts of nitrate include: pond, field source, river water, stream, and fountain sample.

Nitrate is a common contaminant found in water sources due to agricultural practices, industrial activities, and urban runoff. Therefore, a wide range of water sources can be analyzed for trace amounts of nitrate, including ponds, field sources, river water, streams, and fountain samples.

Pool water is less likely to be analyzed for nitrate because it is often treated with chemicals like chlorine, which can affect the accuracy of the nitrate analysis. The selection of water sources for the nitrate analysis depends on the purpose of the experiment, the accessibility of the water sources, and the potential sources of contamination in the area.

To learn more about trace amounts of nitrate, here

https://brainly.com/question/29838196

#SPJ4

The helium pressure is 799 torr.

As 1 mm Hg is equal to 1 torr. In an open-ended mercury manometer, the pressure will be equal to the atmospheric pressure.

Also, the pressure of the mercury level in the open arm is 47 mm above that in the arm connected to the flask of helium. Add both the given numbers,

(752 + 47) mm Hg = 799 torr

To learn more about helium pressure,

https://brainly.com/question/15867535

Answer:

a.) Instead of configuring all up before some down, all of the configurations were placed as up and down, leaving two spots empty in the 2p sublevel.

b.) There is a missing s sublevel for row 3.

c.) There are two up arrows in one of the lines.

d.) When you get to the "d" section you must subtract the number you're using by 1. So, it's supposed to be 2d to the power of 10.

A pure substance (such as H₂O or iron) can only exist in three phases (solid, liquid, and gas) - True.

A kind of matter with a predictable chemical composition and physical characteristics is referred to as a chemical substance. According to certain texts, a chemical compound cannot be physically divided into its component parts without rupturing chemical bonds. Chemical compounds, alloys, and simple substances (substances made up of a single chemical element) are all examples of chemical substances.

To distinguish them from mixes, chemical compounds are frequently referred to as 'pure'. Pure water is a popular illustration of a chemical substance; regardless of whether it is separated from a river or created in a lab, it has the same characteristics and hydrogen to oxygen ratio. Other chemicals that are frequently found in their purest forms are refined sugar (sucrose), gold, table salt (sodium chloride), and diamond (carbon). In reality, though, no material is completely pure, and chemical purity is determined by the chemical's intended application.

Learn more about Pure substance:

https://brainly.com/question/18452279

#SPJ4

The color of the light absorbed by the copper (II) sulfate solution cannot be determined solely based on the wavelength absorbed by the cobalt (II) chloride solution.

The example absorption spectra for cobalt(II) chloride in water is seen below. On the y-axis, a number termed absorbance (which has no units) is shown, and on the x-axis, wavelength (in nanometers). The wavelength at which the absorbance is greatest is 510 nm. This equates to a blue-green colour.

Red light in the spectrum is absorbed by copper(II) ions in solution. All the colours, with the exception of red, will be present in the light that exits the solution. This combination of wavelengths appears to us as a soft blue (cyan).

To know more about chloride solution visit:-

https://brainly.com/question/28792273

#SPJ1

When solid mercury(I) chloride (Hg₂Cl₂) reacts with ammonia (NH₃), two precipitates form: white mercurous ammonium chloride (HgNHCl) and black mercuric nitride (Hg₃N₂).

The chemical equation for the reaction is:

Hg₂Cl₂(s) + 2NH₃(aq) → HgNH₂Cl(s) + Hg₃N₂(s) + 2HCl(aq)

The first precipitate, mercurous ammonium chloride, is a white solid that forms because of the reaction between Hg₂Cl₂ and NH₃. It is also known as white precipitate and has a molecular formula of HgNH₂Cl.

The second precipitate, mercuric nitride, is a black solid that forms because of the reaction between the excess ammonia and the Hg²⁺ ions produced by the Hg₂Cl₂. The molecular formula of mercuric nitride is Hg₃N₂.

To learn more about nitride follow the link:

https://brainly.com/question/24004315

#SPJ4

The term that best describes a solution in a typical kitchen that has as much dissolved solute as it can hold is "saturated solution."

A saturated solution is a solution that contains the maximum amount of solute that can dissolve in a given solvent at a particular temperature and pressure. If more solute is added to a saturated solution, it will not dissolve and will form a separate phase or precipitate.

In a kitchen setting, a common example of a saturated solution is a solution of table salt (sodium chloride) in water. At room temperature, water can dissolve a certain amount of salt, and once this limit is reached, the solution becomes saturated. If more salt is added to the solution, it will not dissolve and will settle at the bottom of the container.

It is important to note that the solubility of a substance can vary depending on factors such as temperature and pressure. Therefore, a solution that is saturated at one temperature or pressure may not be saturated under different conditions.

Learn more about saturated solution here:

https://brainly.com/question/1851822

#SPJ11

To make a 1.0 M solution of KCl from 97.0 g of KCl, we need to dissolve the KCl in approximately 1.30 L of water.

To make a 1.0 M solution of KCl, we need to dissolve 74.55 g of KCl in 1 L of water. However, we have 97.0 g of KCl, which is more than what we need.

We can calculate the volume of water required to dissolve 97.0 g of KCl and make a 1.0 M solution as follows:

First, we need to calculate the number of moles of KCl in 97.0 g:

moles of KCl = mass of KCl / molar mass of KCl

moles of KCl = 97.0 g / 74.55 g/mol

moles of KCl = 1.30 mol

Next, we can use the definition of molarity to calculate the volume of water required:

Molarity = moles of solute / volume of solution

1.0 M = 1.30 mol / volume of solution

volume of solution = 1.30 mol / 1.0 M

volume of solution = 1.30 L

Learn more about molarity at

https://brainly.com/question/14469428

#SPJ1

As the compression is carried out quasi-statically, the gas's temperature will not change during the process. The temperature of the gas is T= 60.65 K.

The temperature of the gas will remain constant during the compression process since it is being done quasi-statically.

This means that the temperature of the gas will remain constant throughout the compression process.

Since the amount of work (500 J) is given, the temperature of the gas can be determined using the equation U = (3/2)nRT, where U is the work, n is the number of moles, R is the ideal gas constant, and T is the temperature.

Solving for T, we find that the temperature of the gas is T = (2/3)(500 J)/(0.50 mol)(8.31 J/mol K) = 60.65 K.

Complete Question:

It takes 500 J of work to compress 0.50 mol of an ideal gas quasi-statically to one-fifth its original volume. What is the temperature of the gas, assuming it remains constant during the compression?

To learn more about temperature visit:

https://brainly.com/question/2339046

#SPJ4

Answer:

physical change, because a new substance is not formed

Explanation:

Answer:

4) physical change, because a new substance is not formed

a physical change is where you can change the look and feel of whatever and get it back to what it was before but a chemical change. is a change where you can not get back to what it was originally

Explanation:

please give me brainliest

The pH of the solution after 3.2 mL of NaOH have been added to the HNO3 is 12.33.

To solve this problem, we need to use the equation:

M(acid)V(acid) = M(base)V(base)

Where M is the molarity of the solution and V is the volume in milliliters.

First, we need to calculate the moles of HNO3 in the initial solution:

0.25 M x 20.0 mL = 0.005 moles HNO3

Next, we need to determine how many moles of NaOH were added to the solution:

0.15 M x 3.2 mL = 0.00048 moles NaOH

Since NaOH is a strong base, it will completely react with the HNO3, forming water and a salt. This means that the number of moles of HNO3 is reduced by the number of moles of NaOH:

0.005 moles HNO3 - 0.00048 moles NaOH = 0.00452 moles HNO3 remaining

Now, we can use the equation for the dissociation of HNO3 in water:

HNO3 + H2O → H3O+ + NO3-

The concentration of H3O+ can be found using the equation for the ion product of water:

Kw = [H3O+][OH-]

Kw is a constant equal to 1.0 x 10^-14 at 25°C. At this point, we have added enough NaOH to completely react with the HNO3, which means that all of the H3O+ initially present in the solution has been neutralized.

Therefore, [OH-] = (moles of NaOH added) / (total volume of solution)

[OH-] = 0.00048 moles / (20.0 mL + 3.2 mL) = 0.0214 M

Using Kw, we can calculate [H3O+]:

1.0 x 10^-14 = [H3O+][OH-]

[H3O+] = 4.67 x 10^-13 M

Finally, we can convert this concentration to pH:

pH = -log[H3O+] = -log(4.67 x 10^-13) = 12.33

To learn more about : NaOH

https://brainly.com/question/28504849

#SPJ11

(a) If one of the reaction products was the then unknown neutron, what was the other product is the C -12.

(b) The q-value of this reaction is the 5.9 × 10⁸ J.

The James Chadwick was discovered the neutron during the experiment involving the nuclear reaction in that the beryllium, bombarded with the alpha particles. The equation of the reaction is as :

⁴Be₉  +  ²He₄  ---->  ⁶C₁₂  +  ⁰n₁

(a) If one of the reaction products was the then unknown neutron, what was the other product is the C -12.

(b) The q-value of this reaction is as :

q = mc²

Where,

The m is the mass

The c is the speed of the light.

m = 4.002603 + 2.014102

m = 1.988501

q = 1.988501  × 3 × 10⁸

q = 5.9 × 10⁸ J

To learn more about James Chadwick here

https://brainly.com/question/14559793

#SPJ4

The volume of a solution, prepared by diluting a 1.0 L solution of 0.40 M KOH to 0.13 M is approximately 3.08 liters.

To calculate the volume of a solution, in liters, prepared by diluting a 1.0 L solution of 0.40 M KOH to 0.13 M, you can use the dilution formula:

M1V1 = M2V2

where M1 is the initial molarity of the solution (0.40 M), V1 is the initial volume of the solution (1.0 L), M2 is the final molarity of the solution (0.13 M), and V2 is the final volume of the solution (in liters) that we need to find.

Rearrange the formula to solve for V2:

V2 = (M1V1) / M2

Now, plug in the given values:

V2 = (0.40 M * 1.0 L) / 0.13 M

V2 = 0.40 L / 0.13

V2 ≈ 3.08 L

So, the volume of the diluted solution is approximately 3.08 liters.

Learn more about the volume of a solution at https://brainly.com/question/29262229

#SPJ11

The volume of the solution after dilution is approximately 3.08 liters.

To calculate the volume of the solution, we can use the formula:

V1C1 = V2C2

where V1 is the initial volume, C1 is the initial concentration, V2 is the final volume, and C2 is the final concentration.

Plugging in the values given in the question, we get:

(1.0 L)(0.40 M) = V2(0.13 M)

Solving for V2, we get:

V2 = (1.0 L)(0.40 M) / (0.13 M) = 3.08 L

Therefore, the volume of the solution, in liters, prepared by diluting a 1.0 L solution of 0.40 M KOH to 0.13 M is 3.08 L.
Hi! I'd be happy to help you calculate the volume of the solution. To do this, we'll use the dilution formula:

C1V1 = C2V2

where C1 and V1 represent the initial concentration and volume, and C2 and V2 represent the final concentration and volume.

1. Plug in the given values:
C1 = 0.40 M (initial concentration of KOH)
V1 = 1.0 L (initial volume of the solution)
C2 = 0.13 M (final concentration of KOH)

2. Rearrange the formula to solve for V2:
V2 = (C1V1) / C2

3. Substitute the values into the formula:
V2 = (0.40 M × 1.0 L) / 0.13 M

4. Calculate V2:
V2 ≈ 3.08 L

So, the volume of the solution after dilution is approximately 3.08 liters.

Learn more about solution here:

https://brainly.com/question/31522192

#SPJ11

The concentrations of major species in a mixture of weak and strong acids and bases are determined by their dissociation behavior and interaction in a solution, influencing the overall pH and buffering capacity.

The relationship among the concentrations of major species in a mixture of weak and strong acids and bases can be understood through their dissociation and interaction in a solution.

Strong acids, such as HCl, fully dissociate in water, releasing a high concentration of H+ ions. Similarly, strong bases, like NaOH, dissociate completely, releasing a high concentration of OH- ions.

Weak acids, such as acetic acid (CH3COOH), only partially dissociate in water, releasing a smaller concentration of H+ ions. Likewise, weak bases, like ammonia (NH3), partially dissociate, releasing a smaller concentration of OH- ions.

When a mixture of weak and strong acids and bases is present, the strong species will react first due to their higher concentrations of H+ or OH- ions. This reaction will affect the pH of the solution, as well as the concentrations of the weak species, as they will be buffered by the strong species.

To learn more about buffering capacity click here

brainly.com/question/24188850

#SPJ11

The lambda max (λmax) of an azo color is the wavelength at which the color retains light most unequivocally.

It is decided by the electronic structure of the color atom, which in turn depends on the nature and position of the chromophores and auxochromes within the atom.

A chromophore could be a gathering of iotas in an atom that retains light due to the nearness of delocalized π electrons.

An autochrome may be a gathering of molecules in an atom that changes the electronic properties of the chromophore and impacts the absorption spectrum of the particle.

In azo dyes, the chromophore is the azo gather (-N=N-), which incorporates a tall molar termination coefficient and assimilates emphatically within the unmistakable locale of the electromagnetic range.

The auxochromes are ordinarily fragrant rings, amino bunches, or carboxylic corrosive bunches, which can give or pull back electrons from the chromophore and move the λmax of the color.

When a coupling reagent is included in an azo color response, it responds with a diazonium salt to make an unused azo color. The structure of the coupling reagent can influence the λmax of the coming about color by modifying the electronic properties of the chromophore.

For case, a coupling reagent with an electron-donating gather can increment the electron thickness on the chromophore and move the λmax to a longer wavelength, while a coupling reagent with an electron-withdrawing bunch can diminish the electron thickness on the chromophore and move the λmax to a shorter wavelength.

The number of fragrant rings within the nucleophile can moreover influence the λmax of the azo dye. Fragrant rings are electron-rich and can give electrons to the chromophore, expanding its electron thickness and moving the λmax to a longer wavelength.

Hence, a nucleophile with different fragrant rings will have a more prominent impact on the λmax of the color than a nucleophile with only one fragrant ring.

In rundown, both the conjugation of the coupling reagent and the number of fragrant rings within the nucleophile can impact the electronic structure of the azo color and move its λmax.

Be that as it may, the impact of the nucleophile is ordinarily more critical since it specifically influences the electron thickness of the chromophore. 

To know more about coupling reactions refer to this :

https://brainly.com/question/19561214

#SPJ4

The given statement "A fractional distillation that involves the use of the fractionating column and to provide the multiple condensation or the evaporation cycles over the given distance" is true as it involves the separation of the miscible liquids.

The Fractional distillation is the type of the distillation that will involves the separation of the miscible liquids. This process will involves the repeated distillations and the condensations. The mixture is separated into the component parts. The separation that happens when the mixture will be heated at the certain temperature and the fractions of the mixture will start to vaporize.

The more will be the volatile components will  increase in the vapor state after the heating, and when it  is liquefied, the  volatile components increase in the liquid state.

To learn more about Fractional distillation here

https://brainly.com/question/27004370

#SPJ4

The heat capacity of 28.4 g of water is 118.8976 J/°C. The closest option to this answer is option b) 119 J/°C.

To calculate the heat capacity of 28.4 g of water, we need to use the formula:

Heat capacity = mass x specific heat

where mass is given as 28.4 g and specific heat of water is given as 4.184 J/g.°C.

So, substituting the values in the formula, we get:

Heat capacity = 28.4 g x 4.184 J/g.°C
Heat capacity = 118.8976 J/°C


To calculate the heat capacity of 28.4 g of water, you need to multiply the mass of water (m) by its specific heat (c). The formula for heat capacity (Q) is:

Q = m × c

Given:
m = 28.4 g
c = 4.184 J/g.°C

Substitute the values and perform the calculation:

Q = 28.4 g × 4.184 J/g.°C = 118.8 J/°C

The closest answer among the given options is:

b) 119 J/°C

To learn more about mass of water click here

brainly.com/question/26789700

#SPJ11

The half-life of the substance is approximately 3.95 years. It would take approximately 8.89 years for the sample to decay to 35% of its original amount.

(a) To find the half-life of the substance, we can use the formula:

[tex]$N(t) = N_0 \cdot \left(\frac{1}{2}\right)^\frac{t}{T}$[/tex]

where N(t) is the amount of substance remaining after time t, N₀ is the initial amount of substance, and T is the half-life.

We know that after one year, the substance has decayed to 91.5% of its original amount, so N(1) = 0.915N₀. Plugging this into the formula, we get:

[tex]$0.915N_0 = N_0 \cdot \left(\frac{1}{2}\right)^\frac{1}{T}$[/tex]

Simplifying this equation, we can cancel out the N₀ on both sides:

[tex]$0.915 = \left(\frac{1}{2}\right)^\frac{1}{T}$[/tex]

Taking the natural logarithm of both sides, we get:

[tex]$\ln(0.915) = \ln\left[\left(\frac{1}{2}\right)^\frac{1}{T}\right]$[/tex]

Using the rule that [tex]$\ln(a^b) = b\ln(a)$[/tex], we can simplify the right-hand side:

[tex]$\ln(0.915) = \frac{1}{T}\ln\left(\frac{1}{2}\right)$[/tex]

Solving for T, we get:

[tex]$T = \frac{\ln(2)}{\ln(1/0.915)} \approx 3.95 \text{ years}$[/tex]

Therefore, the half-life of the substance is approximately 3.95 years.

(b) To find the time it takes for the sample to decay to 35% of its original amount, we can use the same formula as before, but solve for t instead of T:

[tex]$N(t) = N_0 \cdot \left(\frac{1}{2}\right)^\frac{t}{T}$[/tex]

[tex]$0.35 N_0 = N_0 \cdot \left(\frac{1}{2}\right)^\frac{t}{T}$[/tex]

Again, we can cancel out the N₀ on both sides:

[tex]$0.35 = \left(\frac{1}{2}\right)^\frac{t}{T}$[/tex]

Taking the natural logarithm of both sides, we get:

[tex]$\ln(0.35) = \ln\left[\left(\frac{1}{2}\right)^\frac{t}{T}\right]$[/tex]

Using the same rule as before, we can simplify the right-hand side:

[tex]$\ln(0.35) = \frac{t}{T}\ln\left(\frac{1}{2}\right)$[/tex]

Solving for t, we get:

[tex]$t = \frac{\ln(0.35)}{\ln(1/2)} \cdot T$[/tex]

Plugging in the value we found for T in part (a), we get:

[tex]$t = \frac{\ln(0.35)}{\ln(1/2)} \cdot 3.95 \approx 8.89 \text{ years}$[/tex]

Therefore, it would take approximately 8.89 years for the sample to decay to 35% of its original amount.

To learn more about substances

https://brainly.com/question/24372098

#SPJ4

CH4 has only sigma bonds between the carbon and hydrogen atoms, and no pi bonds.

The answer is (E) CH4.

Pi bonding refers to the sharing of electrons between two atoms that occurs when two atomic orbitals with parallel electron spins overlap. Pi bonds are formed by the sideways overlap of two p orbitals.

In the given options, all except CH4 have pi bonds:

(A) CO2 has two pi bonds between the carbon atom and the oxygen atoms.
(B) C2H4 has a double bond between the two carbon atoms, which consists of one sigma bond and one pi bond.
(C) CN− has a triple bond between the carbon and nitrogen atoms, consisting of one sigma bond and two pi bonds.
(D) C6H6 has six pi bonds due to the delocalized pi electron system in the benzene ring.

In contrast, CH4 has only sigma bonds between the carbon and hydrogen atoms, and no pi bonds.

Visit to know more about Sigma bonds:-

brainly.com/question/31377841

#SPJ11

The correct statement is: the most probable molecular speed decreases as the molar mass of the gas increases. The relationship observed between the most probable molecular speed and the molar mass of the gas is that the most probable molecular speed decreases as the molar mass of the gas increases. This is because heavier molecules have more inertia and therefore move more slowly than lighter molecules. So, the larger the molar mass, the slower the molecular speed.

This relationship can be explained by the equation for the most probable molecular speed (V_p), which is derived from the Maxwell-Boltzmann distribution:

V_p = √(2 * R * T / M)

where:
- V_p is the most probable molecular speed
- R is the ideal gas constant
- T is the temperature in Kelvin
- M is the molar mass of the gas

As you can see from the equation, the most probable molecular speed (V_p) is inversely proportional to the square root of the molar mass (M). This means that when the molar mass increases, the most probable molecular speed decreases, and vice versa.

Learn more about molar mass at https://brainly.com/question/837939

#SPJ11

The relationship observed between the most probable molecular speed and the molar mass of the gas is the most probable molecular speed decreases as the molar mass of the gas increases.

This relationship can be explained by the following steps:
1. Molecular speed refers to the velocity of individual molecules in a gas sample.
2. Molar mass is the mass of one mole of a substance, usually expressed in grams per mole (g/mol).
3. The most probable molecular speed can be estimated using the Maxwell-Boltzmann distribution, which describes the distribution of molecular speeds in a gas.
4. According to this distribution, lighter molecules (with lower molar mass) tend to have higher molecular speeds than heavier molecules (with higher molar mass) at the same temperature.
5. Therefore, as the molar mass of a gas increases, the most probable molecular speed decreases.

To learn more about molecular speed, refer:-

https://brainly.com/question/19243977

#SPJ11

The volume of 4.50 moles of nitrogen gas at STP is approximately 101 L. So, the correct answer is 101 L.

At STP (standard temperature and pressure), the volume of one mole of any gas is 22.4 liters. Therefore, to find the volume of 4.50 moles of nitrogen gas at STP, we can simply multiply the number of moles by the molar volume:

At STP (Standard Temperature and Pressure), the volume of 4.50 moles of nitrogen gas (N2) can be calculated using the ideal gas law:

PV = nRT

Where P is the pressure (which is 1 atm at STP), V is the volume, n is the number of moles, R is the gas constant, and T is the temperature (which is 273.15 K at STP).

Rearranging this equation to solve for V, we get:

V = (nRT)/P

Substituting the values for n, R, P, and T, we get:

V = (4.50 mol x 0.08206 L atm K^-1 mol^-1 x 273.15 K)/1 atm

V = 101.3 L

For such more questions on STP:

https://brainly.com/question/27100414

#SPJ11

The pair of elements that are nonmetals and gases at room temperature and normal atmospheric pressure are:

Oxygen (O₂) - Oxygen is a nonmetal that exists as a diatomic gas at room temperature and normal atmospheric pressure. It is colorless, odorless, and tasteless.

Nitrogen (N₂) - Nitrogen is another nonmetal that exists as a diatomic gas at room temperature and normal atmospheric pressure. It is also colorless, odorless, and tasteless.

Both oxygen and nitrogen are essential components of the Earth's atmosphere, with nitrogen making up about 78% of the air we breathe and oxygen making up about 21%.

To know more about atmospheric pressure, visit:

https://brainly.com/question/30166820

#SPJ1

The equator of the sun rotates faster than the poles.

The equator of the sun rotates faster than its poles. This is known as differential rotation, and it is due to the fact that the sun is not a solid body, but is composed of gas and plasma. The equatorial regions of the sun rotate faster because they are farther from the center of the sun, where the gravitational pull is stronger, and thus experience less resistance to their motion.

The period of rotation of the equator of the sun is shorter than that of the poles. The equator rotates once every 25.4 days, while the poles rotate once every 36 days.

Learn more about the sun:https://brainly.com/question/17376727

#SPJ1