Question

The stopcock containing two bulbs of volume $5$ litre and $10$ litre containing an ideal gas at $9$ atm and $60$ atm respectively is opened. What is the final pressure in atm if the temperature remains the same?

Answer 1

Final pressure will be obtained by formula :

$P=\frac{P_1{V}_1+P_2{V}_2}{V_1+V_2}=\frac{5\times 9+60\times 10}{5+10}=43$ atm