Chemistry Practice Problems Chemistry Gas Laws Practice Problems Solution: A sample of 4.0 moles of helium gas is confined to...

# Solution: A sample of 4.0 moles of helium gas is confined to a 24.0 Liter balloon at 176 °C at 6.0 atm. The balloon expands while temperature remains constant to 36.0 Liters. What is the new pressure?A) 2.0 atmB) 3.0 atmC) 4.0 atmD) 8.0 atmE) 9.0 atm

###### Problem

A sample of 4.0 moles of helium gas is confined to a 24.0 Liter balloon at 176 °C at 6.0 atm. The balloon expands while temperature remains constant to 36.0 Liters. What is the new pressure?

A) 2.0 atm

B) 3.0 atm

C) 4.0 atm

D) 8.0 atm

E) 9.0 atm

###### Solution

We are asked to calculate the new pressure when a 24.0 L at 6.0 atm expands to 36.0 L at a constant temperature.

Recall that the ideal gas law is:

$\overline{){\mathbf{PV}}{\mathbf{=}}{\mathbf{nRT}}}$

The pressure and volume of a gas are related to the number of moles, gas constant and temperatureThe value nRT is constant

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