CHEMISTRY

posted by .

A mixture of methane and helium is placed in a 2.0 l flask at 27 degrees the partial pressure of methane is 0.72 ATM and the partial pressure of helium is 0.22 ATM . What is the mole fraction of ch4?

  • CHEMISTRY -

    mole fractions are proportional to temp:

    find total moles:
    n=PV/RT where P=.94ATM


    n1/n=.72/.94

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry - Gas Laws

    Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 118K and 1.0 atm pressure is sealed off. If we inject 120.0 mL of liquid helium and allow the entire system to warm to room …
  2. Chemsitry II

    mole fraction is equal to partial pressure divided by the total pressure Total pressure= sum of partial pressure use PV=nRT where n= number of moles equation become PV/RT=n make sure to convert the temperature to Kelvin and to use …
  3. College Chemistry

    A mixture of He and O2 is placed in a 4.00L flask at 32 degrees Celsius. The partial pressure of the He is 2.7 atm and the partial pressure of the O2 is 1.4 atm. What is the mole fraction of O2?
  4. chemistry

    If helium added to the mixture increases the pressure to 1.90 {\rm atm}, what is the partial pressure ({\rm atm}) of the helium?
  5. chemistry

    A bearthing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 1.2 atm if PHe = 0.98 atm and PCO2 = 0.04 atm?
  6. Chemistry

    A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 3.00 atm. The partial pressure of hydrogen is 0.550 atm and the partial pressure of argon is 615 mm Hg. What is the partial pressure of helium?
  7. chemistry

    A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.90 atm. The partial pressure of hydrogen is 0.500 atm and the partial pressure of argon is 760. mm Hg. What is the partial pressure of helium?
  8. Chemistry

    A heliox deep-sea diving mixture delivers an oxygen partial pressure of 0.20 atm when the total pressure is 13.0atm .What is the partial pressure of helium in this mixture?
  9. science-chemistry

    please anwser soon, a rigid 4.10L flask contains a mixture of 1.25 moles of H2, 0.250 mole of O2, and sufficient Ar so that the partial pressure of Ar in the flask is 1.00 atm. The temperature is 63.5 degrees C A) Calculate the total …
  10. chemistry

    A closed container with a mixture of hydrogen, helium, and argon has a total pressure of 2.55 atm. The partial pressure of hydrogen is 0.700 atm and the partial pressure of argon is 705 mm Hg. What is the partial pressure of helium?

More Similar Questions