Chemistry Problem (gases)?

Question

What is the molar mass of a gas if 0.440 g occupies 179 mL at 0.90 atm and 86 degrees Celsius?

I'm guessing you have to figure out how many moles of gas you have, but I'd like some help.

Answer 1

PV=nRT

P=pressure in atm

V=Volume in Litres

n=moles

R=8.314 (atm L)/(mole K)

T= Temperature in Kelvin

convert Celsius to kelvin and solve for n. divide grams of gas by the found moles of gas to get your answer.

Answer 2

PxV=nxRxT

0.90x0.179=nx0.082x(86+273)

n=0.005moles

if 0.440g is 0.005 moles what gram is 1 mole?

answer is 88g/mol

8.314j/mole K

0.082 L atm/mole K