Chemistry

posted by .

Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 500. mL at 744. torr and 22. °C, how many grams of methane are in the sample?

  • Chemistry -

    First, get the number of moles (n) by using the ideal gas law
    n = PV/(RT)

    R = 82.06 cm^3*atm/(mole*K)
    V = 500 cm^3
    P = 744/760 = 0.9789 atm
    T = 295 K

    n = 0.0202 moles

    Then multipy n by the molecular weight(16 g/mole)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume …
  2. chem help

    A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?
  3. chemistry help!

    A sample of methane gas, CH4 was collected over water at 25 degrees celcius and 720 torr. The volume of the wet gas is 2.50L. What will be the volume of the dry methane at a standard pressure?
  4. chemistry

    A sample of methane gas, CH4, was collected over water at 25.0ºC and 800 torr. The volume of the wet gas is 4.36 L. What will be the volume of the dry methane at standard pressure?
  5. chemistry

    The volume of a sample of dry methane (CH4) collected at 25°C was 7.00 L. The total pressure was 688 torr. How many moles of methane were collected?
  6. chemistry

    Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 100. mL at 754 torr and 21.2 °C, how many grams of methane are in the sample?
  7. Chemistry

    Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 200. mL at 741 torr and 27.2 °C, how many grams of methane are in the sample?
  8. Chemistry

    Methane is formed in landfills by the action of certain bacteria on buried organic matter. If a sample of methane collected from a landfill has a volume of 200. mL at 741 torr and 27.2 °C, how many grams of methane are in the sample?
  9. Chemistry

    What volume of “wet” methane would have to be collected at 20.0 oC and 760.0 torr to be sure the sample contained 2.00 x 102 ml of dry methane at the same temperature and pressure ?
  10. Chemistry

    A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr?

More Similar Questions