# Gases are sold in large cylinders for laboratory use. What pressure in atmospheres will be exerted by 2500 g of oxygen gas (O2) when stored at 22°C in a 40.0 L cylinder?

##### 1 Answer

Dec 9, 2016

#### Answer:

47.3 atm

#### Explanation:

Assuming near ideal gas behavior where

Rearranging the equation we have

V = 40.0 L

R = 0.0820575 L-atm/K-mol

T = 22'C = 295'K

n = (2500g/32.0 g/mol) = 78.125 moles of

P = 47.3atm