Answer:The new volume when 0.40 moles of gas are added to the balloon is 8 L.
Explanation:
Initial moles of gas [tex]n_1[/tex] = 0.10 moles
initial volume of the balloon, [tex]V_1[/tex] = 2.0 L
Final moles of gas [tex]n_2[/tex] = 0.40 moles
Final volume of the balloon, [tex]V_2[/tex] = 2.0 L
Avogadro Law:[tex]\frac{n_1}{V_1}=\frac{n_2}{V_2}[/tex]
[tex]V_2=\frac{n_2\times V_1}{n_1}=\frac{0.40 mol\times 2.0L}{0.10 mol}=8.0 L[/tex]
The new volume when 0.40 moles of gas are added to the balloon is 8 L.
