What is the chemical name for Se8O7

Air is a mixture of gases that is about 78.0% n2 by volume. when air is at standard pressure and 25.0 ∘c, the n2 component will

ArbitrLikvidat [17]

Step first:

Since, 78.0 percent $N_{2}$ by volume is present in the air which implies there are 78 moles of $N_{2}$ present in 100 moles of air.

Now,

Mole fraction of $N_{2}$ = $\frac{Moles of N_{2}}{Total moles of gases in the mixture}$

Mole fraction = $\frac{78}{100} mol$

= 0.78

Partial pressure is equal to the multiplication of total pressure and mole fraction.

Partial pressure = $0.78\times 1 atm$ (as 1 atm is atmospheric pressure)

= 0.78 atm.

Step second:

Henry's law constant is calculated by:

$S_{g}=k\times P_{g}$

where,

$S_{g}$ is solubility of gas

$P_{g}$ is partial pressure of gas

$k$ is henry's law constant

Substitute the value of solubility and partial pressure to find the value of Henry's law constant in above formula:

$4.88\times 10^{-4} M=k\times 0.78 atm$

k = $\frac{4.88\times 10^{-4}M}{0.78 atm}$

= $6.25\times 10^{-4} M atm^{-1}$

Thus, Henry's Law constant is $6.25\times 10^{-4} mol L^{-1} atm^{-1}$ .

5 0

3 years ago

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A capacitor is to an electric current as a _____ is to a river.

Liono4ka [1.6K]

Dam would me the answer

5 0

3 years ago

What type of bond is in aluminum sulfate?

ratelena [41]

That's actually a polyatomic Ion, so it's an Ionic bond, because Aluminum is a metal, and sulfate is a covalent compound.

4 0

3 years ago

he chlorination of methane occurs in a number of steps that results in the formation of chloromethane and hydrogen chloride. The

frez [133]

Answer:

The total pressure in the flask is 0,619 atm.

Explanation:

For the reaction:

2CH₄(g) + 3Cl₂(g) → 2 CH₃Cl(g) + 2HCl(g) + 2Cl⁻(g)

The moles of CH₄ in 295 mL at STP are:

n = PV/RT

Where P is pressure (1 atm), V is volume (0,295L), R is gas constant (0,082atmL/molK) and T is temperature (273,15 K)

Replacing, moles of CH₄ are 0,0132 moles

In the same way, moles of chlorine are 0,0324 moles

As 3 moles of Cl₂ react with 2 moles of CH₄, for a total reaction of 0,0132 moles of CH₄ you need:

0,0132 moles CH₄ × $\frac{3 mol Cl_{2}}{2 mol CH_{4}}$ = 0,0198 moles Cl₂. That means that 0,0324-0,0198 = -0,0126 moles of Cl₂ are in excess-.

As the reaction reaches in 77%, the moles of CH₄ that don't react are:

0,0132×(100%-77%)= 3,036x10⁻³ moles of CH₄

Also, the moles of Cl₂ that don't react are:

0,0126 + 0,0198×(100%-77%)= 0,0172 moles of Cl₂

The moles produced of each compound are:

0,0132×77% moles × $\frac{2 mol CH_{3}Cl}{2 mol CH_{4}}$ = 0,0102 moles of CH₃Cl -that are the same moles of HCl and Cl⁻-

Thus, total moles in the flask are:

3,036x10⁻³ moles of CH₄ + 0,0172 moles of Cl₂ + 0,0102 moles of CH₃Cl + 0,0102 moles of HCl + 0,0102 moles of Cl⁻ = 0,0507 total moles

As the volume of the flask is 2,00L and the final temperature is 298 K. The total pressure in the flask is:

P = nRT/V

P = 0,619 atm

I hope it helps!

5 0

3 years ago

A neutral atom has the atomic number 16 and a mass number of 33; how many protons, neutrons, and electrons are found within the

Pachacha [2.7K]

16 protons, 16 electrons and 17 neutrons

7 0

3 years ago

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What is the chemical name for Se8O7​

What is the chemical name for Se8O7