Chemistry

posted by .

At a pressure of 103 kPa and a temperature of 22oC, 52.9 g of a certain gas has a volume of 31.5 L. What is the identity of this gas?

  • Chemistry -

    Use PV = nRT
    I would change 103 kPa to atmospheres, change 22 C to Kelvin (273 + C = Kelvin), and plug in V, solve for n = number of moles.
    Then number of moles = grams/molar mass.
    You know moles, you know grams, solve for molar mass, then look on the periodic table to find the name of the element. (Note: I have assumed that this is a gas element, it COULD be CO2 or some other gas. But find the molar mass and then we can figure out what to do if it isn't an element.)

  • Chemistry -

    how do you find the molar mass

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    i keep trying to do these problems and i don't understand them. please help me!! 1. Gas stored in a tank at 273 K has a pressure of 388 kPa. The save limit for the pressure is 825 kPa. At what temperature will the gas reach this pressure?
  2. Chemistry

    A McLeod gauge measures low gas pressures by compressing a known volume of the gas at constant temperature. If 315 cm^3 of gas is compressed to a volume of 0.0457 cm^3 under a pressure of 2.51 kPa what was the original gas pressure?
  3. Chemistry II

    17.5 mL of oxygen gas were collected at room temperature (22oC) and 100.2 kPa of atmospheric pressure. a) How many moles of oxygen gas were produced?
  4. Chemistry;HELP

    1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure?
  5. CHEMISTRY!! D:

    1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure?
  6. Physics

    A gas cylinder of volume 26 liters contains an ideal gas at temperature 27 degrees C and pressure 1920 kPa. Some of the gas leaks until the pressure falls to 1500 kPa. How many moles of gas leaked, assuming that the temperature remains …
  7. Chemistry

    At a pressure of 103kPa and a temperature of 22 degrees C, 52.9 g of a certain gas has a volume of 31.5 L. what is the identity of this gas?
  8. chem

    Show work 1. How many moles of oxygen will occupy a volume of 2.50 liters at 121.6 kPa and 331 K?
  9. PHYSICS (PLEASE HELP ME ASAP)

    At a temperature of 18.0°C of 23.0cm^3 of a certain gas occupies has pressure of 103 kPa. (a) What volume would the gas occupy at a temperature of 0.00°C and pressure of 101kPa?
  10. PHYSICS (REALLY DIFFICULT PLEASE HELP)

    At a temperature of 18.0°C of 23.0cm^3 of a certain gas occupies has pressure of 103 kPa. (a) What volume would the gas occupy at a temperature of 0.00°C and pressure of 101kPa?

More Similar Questions