What is the pressure of the sample?

Question

A student has a sample of 1.58 moles of fluorine gas that is contained in a 25.3 L container at 274 K. What is the pressure of the sample? The ideal gas constant is 0.0821 L*atm/mol*K. Round your answer to the nearest 0.01 and include units.

Answer 1

Use the ideal gas law: PV = nRT

To find "P", divide both sides by "V" to get:

P = nRT/V

n = 1.58 moles

R = 0.0821 L•atm/(mol•K)

T = 274 K

V = 25.3 L

P = (1.58)(0.0821)(274)/25.3 plug it in your calculator - the answer is between 1 and 2 and the unit is "atm"