Chapter 10, Problem 36P

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# Gas is contained in an 8.00-L vessel at a temperature of 20.0°C and a pressure of 9.00 atm. (a) Determine the number of moles of gas in the vessel. (b) How many molecules are in the vessel?

(a)

To determine
The number of moles of gas.

Explanation

Given info: The temperature is T=20Î¿C . The volume is V=8.00â€‰L . The pressure is 9.0 atm.

From Ideal gas equation, the number of moles of gas is,

n=PVRT

• R is the gas constant.

Substitute 20Î¿C for T, 9.0 atm for P, 8.31â€‰Jmol-1K-1 for R and 8.00 L for V in the above equation to get n.

n=(9.0â€‰atm)(8.00â€‰L)(8

(b)

To determine
The number of molecules of gas.

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