A sample of 2.0 moles of helium gas is contained in a tank with a volume of 5.0L at a temperature of 25°C. What is the pressure of the gas in the tank in atm?
Given: R = 0.0821 L. atm/mol. K
O 9.8 atm
O 0.00069 atm
O 0.82 atm
O 0.0082 atm

Pressure of the gas in the tank is 9.8 atm.

Explanation:

Given: Moles = 2.0 moles,     Volume = 5.0 L

Temperature =

Formula used to calculate pressure is as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

Thus, we can conclude that pressure of the gas in the tank is 9.8 atm.

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