200. A metal capsule with a volume of 30 liters contains oxygen gas at a pressure of $5\times10^5$ Pa and a temperature of 27°C. Some oxygen is released from the capsule such that the remaining gas pressure drops to $2.9\times10^5$ Pa and the temperature becomes 17°C. How many grams of gas have been released from the capsule? $$\left(M_{O_2} = 32\ \frac{\text{g}}{\text{mol}},\ R = 8\ \frac{\text{J}}{\text{mol·K}}\right)$$ (1) $50$ (2) $60$ (3) $80$ (4) $100$ \rule{\textwidth}{0.4pt} Calculation Space %% Page 19 Chemistry122-DPage 18
\textbf{200.} A metal capsule with a volume of 30 liters contains oxygen gas at a pressure of $5\times10^5$ Pa and a temperature of 27°C. Some oxygen is released from the capsule such that the remaining gas pressure drops to $2.9\times10^5$ Pa and the temperature becomes 17°C. How many grams of gas have been released from the capsule?
$$\left(M_{O_2} = 32\ \frac{\text{g}}{\text{mol}},\ R = 8\ \frac{\text{J}}{\text{mol·K}}\right)$$
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(1) $50$ \hspace{2cm} (2) $60$ \hspace{2cm} (3) $80$ \hspace{2cm} (4) $100$
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