Chemistry

Determine the molar mass of each of the following gases?
A. 2.90 g of gas that occupies 0.500 L at 0 C and 1.00 atm (STP)
B. 1.48 G of gas that occupies 2.00 L at 0 C and 760 mmHg (STP)
C. 0.726g of a gas that occupies 855 mL at 1.20 atm at 18 C?
D. 2.32 G of a gas that occupies 1.23 L at 685 mmHg and 25 C?

asked by amy
  1. Use PV = nRT to solve for n.
    Then n = grams/molar mass.

    posted by DrBob222
  2. If 12.8 grams of Hydrogen reacts with 18.6 grams of oxygen it produces water. How much water was produced

    posted by john
  3. 80.0 L

    posted by Kayla

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