Answer to Question #182363 in General Chemistry for Daniela(me)

Question

16. What volume will 12 g of oxygen gas (O2) occupy at 25 °C and a pressure of 52.7 kPa?

Answer 1

Ideal gas law equation $PV=nRT$

$P-pressure =52.7kPa$

$V-volume=?$

$n-moles=\frac {12}{32}=0.375moles$

$R=Constant = 8.314Jmol^{-1}K^{-1}$

$T=Temperature = 25 +273=298K$

Substituting the values

$52700Pa×V=0.375mol×8.314Jmol^{-1}K^{-1}×298K$

$V=17.6L$