The mass of O atoms present in 5-6 litre of carbon dioxide at STP is-A- 32 gB- 16 gC- 8 gD- 24 g

The correct option is C 8 gUsing the interconversion of mole volume relationship, nbsp; We have, the number of moles, nbsp; n =Volume of gas (at STP)22.4 n ...

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Standard XII

Chemistry

Molarity

The mass of O...

Question

The mass of $O$ atoms present in 5.6 litre of carbon dioxide at STP is:

32 g

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16 g

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8 g

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24 g

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Solution

The correct option is C 8 g
Using the interconversion of mole-volume relationship,
We have, the number of moles,
n = $\frac{Volume of gas (at STP)}{22.4}$
n = $\frac{5.6}{22.4} = 0.25$ mol

2 moles of O are present in one mole of carbon dioxide
$Number of moles of O present in 0.25 moles of carbon dioxide = 2 \times 0.25 = 0.5 mol$
Mass of O atom = $0.5 \times 16$ = 8 g

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The mass of O atoms present in 5.6 litre of carbon dioxide at STP is:

The mass of $O$ atoms present in 5.6 litre of carbon dioxide at STP is: