At $S T P$ weight of 1 litre of a gas is $1.25$ grams. The gas will be:

N_{2}

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C O

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C_{2} H_{4}

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All

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Solution

The correct option is C All
$1$ litre of a gas at STP weighs 1.25 grams.

$22.4$ litres (1 mole) weighs about $x$ grams.

$x = 1.25 \times 22.4 = 28$ grams.

All the molecules are having molecular weight of 28 grams.

Hence option D is correct.

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At STP weight of 1 litre of a gas is 1.25 grams. The gas will be:

The correct option is C All1 litre of a gas at STP weighs 1.25 grams.22.4 litres (1 mole) weighs about x grams.x=1.25×22.4=28 grams.All the molecules are having molecular weight of 28 grams.Hence option D is correct.

At $S T P$ weight of 1 litre of a gas is $1.25$ grams. The gas will be:

The correct option is C All
$1$ litre of a gas at STP weighs 1.25 grams.

$22.4$ litres (1 mole) weighs about $x$ grams.

$x = 1.25 \times 22.4 = 28$ grams.

All the molecules are having molecular weight of 28 grams.

Hence option D is correct.