1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
konstantin123 [22]
1 year ago
7

a sample of natural gas contains 8.24 moles of methane, 0.421 moles of ethane, and 0.116 moles of propane. if the total pressure

of the gas is 1.37 atm, what are the partial pressures of the gases?
Chemistry
1 answer:
Varvara68 [4.7K]1 year ago
6 0

The partial pressure (Px) of a gas in a gas mixture is equal to its mole fraction (Xi) multiplied by the total pressure (P) of the gas mixture. That means that we have to calculate the mole fraction of each gas, then calculate its partial pressure. The mole fraction of a gas is its number of moles (n) divided by the total number of moles.

$$ Mole fraction of methane: \\$\chi_{\text {methane }}=\frac{\mathrm{n}_{\text {methane }}}{\mathrm{n}_{\text {total }}} \chi_{\text {methane }}=\frac{8.24 \mathrm{~mol}}{8.24 \mathrm{~mol}+0.421 \mathrm{~mol}+0.116 \mathrm{~mol}} \chi_{\text {methane }}=\frac{8.24 \mathrm{~mol}}{8.78 \mathrm{~mol}} \chi_{\text {methane }}=0.938$

$$Partial Pressure of methane:\\$\mathrm{P}_{\text {methane }}=\chi_{\text {methane }} \times \mathrm{PP}_{\text {methane }}=0.938 \times 1.37 \mathrm{~atm} \mathbf{P}_{\text {methane }}=\mathbf{1 . 2 8} \mathbf{~ a t m}$

$$Mole fraction of ethane: \\$\chi_{\text {ethane }}=\frac{\mathrm{n}_{\text {ethane }}}{\mathrm{n}_{\text {total }}} \chi_{\text {ethane }}=\frac{0.421 \mathrm{~mol}}{8.78 \mathrm{~mol}} \chi_{\text {ethane }}=0.0479$

$$Partial pressure of ethane:\\$\mathrm{P}_{\text {ethane }}=\chi_{\text {ethane }} \times \mathrm{PP}_{\text {ethane }}=0.0479 \times 1.37 \mathrm{~atm} \mathrm{P}_{\text {ethane }}=\mathbf{0 . 0 6 5 6} \mathbf{~ a t m}$

$$Mole fraction of propane:\\$\chi_{\text {propane }}=\frac{\mathrm{n}_{\text {propane }}}{\mathrm{n}_{\text {total }}} \chi_{\text {propane }}=\frac{0.116 \mathrm{~mol}}{8.78 \mathrm{~mol}} \chi_{\text {propane }}=0.0132$

<h3>What is Dalton’s Law?</h3>

Dalton's law of partial pressures is a gas law that states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures exerted by each individual gas in the mixture. The mole fraction of a given gas in a gas mixture is equal to the ratio of the partial pressure of that gas to the total pressure exerted by the gas mixture. This mole fraction can also be used to calculate the total number of moles of constituent gas if the total number of moles of the mixture is known. In addition, the mole fraction can also be used to calculate the volume of a certain gas in a mixtur.

To learn more about Dalton’s Law, visit:

brainly.com/question/14119417

#SPJ4

You might be interested in
1. Will a precipitate form if solutions of potassium sulfate and barium nitrate are combined? If so, write the net ionic equatio
ipn [44]

Explanation:

1.

YES

K2SO4(aq) + Ba(NO3)2(aq) --> Ba(SO4)2(s) + 2KNO3(aq)

Net ionic equation

2SO4^2-(aq) + Ba2+(aq) --> Ba(SO4)2(s)

2.

NO

No precipitate is formed because KNO3, MgSO4, K2SO4 and Mg(NO3)2 all are soluble.

3.

YES

BaCl2(aq) + Na2(SO4)(aq) --> BaSO4(s) + 2NaCl(aq)

Net ionic equation:

Ba2+(aq) + SO4^2-(aq) --> BaSO4(aq)

4.

Ni2+(aq) + S2-(aq) ---> NiS(s)

6 0
3 years ago
HELP!!!! I WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST
ELEN [110]

Answer:

I answered first, give me brainliest

Explanation:

8 0
3 years ago
A chemist used 6.5 moles of water in this reaction. How many grams of water were used?
denpristay [2]

Answer:

\boxed {\boxed {\sf 120 \ or \ 117 \ grams \ H_2O \ depending \ on \ significant \ figures }}

Explanation:

We want to convert from moles of water to grams of water.

First, find the molar mass of water (H₂O) Look on the Periodic Table for the masses of hydrogen and oxygen.

  • Hydrogen (H): 1.008 g/mol
  • Oxygen (O): 15.999 g/mol

Next, add up the number of each element in water. The subscript of 2 comes after the H, so there are 2 moles of hydrogen.

  • 2 Hydrogen: (1.008 g/mol*2) = 2.016 g/mol

Finally, add the molar mass of 2 hydrogen and 1 oxygen.

  • 2.016 g/mol (2 Hydrogen) + 15.999 g/mol (1 oxygen)= 18.015 g/mol

Next, find the grams in 6.5 moles.

Use the molar mass we just found as a ratio.

molar \ mass \ ratio: \frac{18.015 \ g \ H_2O}{1 \ mol \ H_2O}

We want to find the grams in 6.5 moles. We can multiply the ratio above by 6.5

6.5 \ mol \ H_2O * \frac{18.015 \ g \ H_2O}{1 \ mol \ H_2O}

Multiply. Note that the moles of H₂O will cancel each other out.

6.5 * \frac{18.015 \ g \ H_2O}{1}

6.5 * {18.015 \ g \ H_2O}

117.0975 \ g \ H_2O

If we want to round to the technically correct significant figures, it would be 2 sig figs. The original measurement, 6.5, has 2 (6 and 5).

\approx 120 \ g \ H_2O

6 0
3 years ago
A device that generates an electrical current by taking advantage of a difference in the spontaneous tendency of substances to l
frutty [35]

Answer:

A. Electrochemical Cell

Explanation:

5 0
3 years ago
What is the organic compound?
kondaur [170]

Answer:

propa-1-nol

Explanation:

easy clapp

3 0
2 years ago
Other questions:
  • 1. In a compound, chemical energy is contained in the (1 point)
    10·2 answers
  • A reproducible measurement is an accurate one. <br> Sometimes true? Always true? Never true?
    8·1 answer
  • What is the IUPAC name of the following substance?​
    13·1 answer
  • When a solid such as ice begins to melt, heat energy is added. What is the function of this added heat energy?
    14·1 answer
  • What is the shorter form of the elements name
    13·1 answer
  • Each B atom is adjacent to 2 A atoms and 2 B atoms. What is the B-C-B angle ?
    15·1 answer
  • What is the ph for pOH = 3.45
    13·2 answers
  • Why does the glass of water weigh less after the pill has dissolved? Why does the glass of water weigh less after the pill has d
    6·1 answer
  • I need help please with questions 35+38
    13·1 answer
  • Animals and humans obtain the energy they need from what?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!