Question

a rigid 8.77L tanks contains 1.45 moles oxygen at 20°C. what is the pressure in atm?

Answer 1

1) use the formula PV=nRT
2) Plug in given values: P(8.77 L)= (1.45 mol)(0.0821)(293 K)
3) isolate P: P= (1.45x.0821x293)/(8.77)
4) solve: P=3.98 atm