chem help please

Question

A 0.462 g sample of oxygen gas at 68.5 psi occupies a volume of 84.6 mL, what is the temperature in Kelvin?

Answer value

Answer 1

Hello, Molly,

Use PV=nRT rearranged to

T = PV/RT

Convert 68.5 psi to atm (4.66 atm) and 84.6 ml into Liters (0.0846L)

Now we can use R = 0.08206 L*atm*K^-1*mole^-1 since the units (atm and L) are now consistent.

Calculate how many moles of O₂ there are in 0.462 g (0.462g/32g/mole) = 0.0144 moles

Plug all the values into the equation and you'll find T = 332.8K

Bob