A cylinder contains 10 kg of gas at pressure 107 N/m2. The quantity of gas take out of cylinder, if final pressure is 2.5 x 106 N/m, is (assume the temperature of gas as constant) :

zero 7.5 kg 2.5 kg 5 kg

2.5 kg

At constant temperature for the given volume of gas : \(\frac{P_1}{P_2} = \frac{m_1}{m_2}\) \(\Rightarrow \frac{10^7}{2.5*10^6} = \frac{10}{m_2}\) \(\Rightarrow m_2 = \frac{2.5*10^6*10}{10^7}\) = 2.5 kg