Which is heaviest?

25gm of mercury

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2 mole of water

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2 moles of carbon dioxide

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4 gm atoms of oxygen

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Solution

The correct option is D 2 moles of carbon dioxide
Mass of 1 mole of carbon dioxide = $44 g$

So, the mass of $2$ moles of carbon dioxide = $88 g$

Hence, $2$ moles of carbon dioxide is heaviest and the correct option is $C$ .

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