Question

A bicycle has a volume of 650 cm3. It is inflated with carbon dioxide to a pressure of 80 psi at 20 C. How many grams of carbon dioxide is contained in the tire?

Answer 1

Solution.

$V=650cm^3=0.00065m^3;$

$P=80psi=551580Pa;$

$T=293K;$

$M=0.029 kg/mol;$

$m - ?;$

$PV=\dfrac{m}{M}RT\implies m=\dfrac{PVM}{RT};$

$m=\dfrac{551580\sdot0.00065\sdot0.029}{8.31\sdot293}=0.0043kg=4.3g;$

Answer: $4.3g.$