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120 g of an...

Question

120 $g$ of an ideal gas of molecular weight 40 are confined to a volume of 20 litre at 400 $K$ , then the pressure of gas is................(in $a t m$ as nearest integer)

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Solution

As we know,
$P V = n R T$
$P = \frac{3 0.082 \times 400}{20} P = 4.92 a t m$

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