Chemistry problems

Question

If I have 37 moles of gas at a pressure of 91 kPa and at a temperature of 126 ⁰C, what is the volume of the container that the gas is in?

If I contain 3 moles of gas in a container with a volume of 60 liters and at a temperature of 400 K, what is the pressure inside the container?

If I contain 3.6 moles of gas in a container with a volume of 60 liters and at a temperature of 310 K, what is the pressure inside the container?

If I have 1.9 moles of gas held at a pressure of 5 atm and in a container with a volume of 50 liters, what is the temperature of the gas?

If I have an unknown quantity of gas at a pressure of 0.5 atm, a volume of 25 liters, and a temperature of 300 K, how many moles of gas do I have?

Answer 1

To successfully navigate this type of problem, you need to identify all of the values and convert them to units that will agree with the ideal gas constant, R, before running through the calculation.

n = 37 moles

P = 91 kPA *(1 atm/101.3 kPa) = 0.898 atm

T= 126 C = 399 K

PV = nRT

V = nRT/V = (37 moles)(0.08206 L*atm/mol*K)(399K)/(0.898 atm) = 1349 L = 1.3 × 10³ L (to two significant figures)

If you'd like help solving the rest, I'm available for online lessons most of this week!