What is the pressure of a 1.0 L flask containing of He at 25°C? (R= 0.0821 L atm/ mol K)

Question

What is the pressure of a 1.0 L flask containing  of He at 25°C? (R= 0.0821 L atm/ mol K)

Quizplus · Accepted Answer

First, we need to use the Ideal Gas Law equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

We have all the values except for P, so we can rearrange the equation to solve for P:

P = nRT/V

P = (11 mol)(0.0821 L atm/mol K)(25°C + 273.15) / 1.0 L

P = 3.7 atm

Therefore, the answer is B) 3.7 atm.

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