Answer to Question #90645 in General Chemistry for Joan

Question

A student blows up a ballon to a volume of 31.4 L at 1.2 atm and 27 degrees Celsius. How many miles of carbon dioxide are in the ballon?

Answer 1

pV = nRT;

n = pV/RT;

R = 82.057 cm³×atm/(mol × К);

V = 31.4 l = 31400 cm³ ;

T = t + 273.15 = 27 + 273.15 = 300.15 K;

n = 1.2 atm × 31400 cm³ / 82.057 cm³× atm/(mol × K) × 300.15 K = 37680/24629.4 = 1.53 mol.