What is the number of moles of gas in a sample occupying 245 mL at - ProProfs Discuss

# What is the number of moles of gas in a sample occupying 245 mL at 409 torr at 38 C?

A. 0.0516 mol
B. 0.516 mol
C. 0.00516 mol
D. 5.16 mol

This question is part of Chemistry
Asked by Toinkxz, Last updated: Jan 15, 2020

#### E. Barnes

But Can you play this?

E. Barnes, Professional Gamer, Professional Gamer, Washington

The correct answer to this question is C, 0.00516 mol. To solve this equation, the ideal gas law equation can be used. The equation is P V = n R T. P stands for the pressure of the gas. V is for the volume the gas occupies. n is the number of moles present, R is the univeral gas constant, which is 0.0821 atm L mol K .Lastly, T is the absolute temperature of the gas.

Plugging in the amounts given in the question gives us our answer. The ideal gas law used to solve this question was first introduced in 1834 by physicst Emile Clapeyron. He cited the law as a combination of the Boyles and Charles laws.

John Smith