A container has a volume of $21 L$ $21 L$ and holds $15 m o l$ $15 mol$ of gas. If the container is compressed such that its new volume is $7 L$ $7 L$ , how many moles of gas must be released from the container to maintain a constant temperature and pressure?

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A container has a volume of $21 L$ $21 L$ and holds $15 m o l$ $15 mol$ of gas. If the container is compressed such that its new volume is $7 L$ $7 L$ , how many moles of gas must be released from the container to maintain a constant temperature and pressure?

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Answer 1 · 2016-05-19T09:09:20

$10 m o l$ $10mol$

Explanation:

Pressure( $P$ $P$ ),Volume( $V$ $V$ ),Number of $m o l$ $mol$ ( $n$ $n$ ),Gas constant( $R = 0.082$ $R=0.082$ ), Kelvin temperature( $T$ $T$ )
$P V = n R T$ $PV=nRT$
$P \cdot 21 = 15 R T \to P \cdot 7 = n R T \to n = 5$ $P*21=15RT->P*7=nRT->n=5$
So $15 - 5 = 10$ $15-5=10$ is the amount that needs to be released to maintain a constant temperature and pressure

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A container has a volume of $21 L$ $21 L$ and holds $15 m o l$ $15 mol$ of gas. If the container is compressed such that its new volume is $7 L$ $7 L$ , how many moles of gas must be released from the container to maintain a constant temperature and pressure?

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A container has a volume of 21 L21L21 L and holds 15 mol15mol15 mol of gas. If the container is compressed such that its new volume is 7 L7L7 L, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

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A container has a volume of $21 L$ $21 L$ and holds $15 m o l$ $15 mol$ of gas. If the container is compressed such that its new volume is $7 L$ $7 L$ , how many moles of gas must be released from the container to maintain a constant temperature and pressure?