Question

Balloons of $4l$ capacity are to be filled with hydrogen at a pressure of $1$ atm and ${27}^{o}C$ from an $8l$ cylinder containing hydrogen at $10$ atm at the same temperature. Find the number of balloons that can be filled.

Answer 1

$\frac{{P_{1}V}_1}{T_1}=\frac{{P_{2}V}_2}{T_2}⟹\frac{10atm\times 8l}{300K}$
$=\frac{1atm\times V_2}{300K}⟹V_2=80l$

No. of balloons of $4l$ capacity= $\frac{80l}{4l}=20$