24.9 g of sodium thiosulphate (Mol. mass = 249) is weighed by a chemist. The moles of sodium thiosulphate he has weighed, are:

\frac{1}{10}

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\frac{1}{5}

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\frac{1}{2}

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Solution

The correct option is D $\frac{1}{10}$
1 mole of sodium thiosulfate weighs about its molecular weight that is 249 grams
So how many moles of sodium thiosulfate weighs about 24.9 grams
Therefore
$1 \times 24.9 = X \times 249$
Hence option $A$ is correct.

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Similar questions

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24.9 g of sodium thiosulphate (Mol. mass = 249) is weighed by a chemist. The moles of sodium thiosulphate he has weighed, are:

The correct option is D 1101 mole of sodium thiosulfate weighs about its molecular weight that is 249 gramsSo how many moles of sodium thiosulfate weighs about 24.9 gramsTherefore1×24.9=X×249Hence option A is correct.

The correct option is D $\frac{1}{10}$
1 mole of sodium thiosulfate weighs about its molecular weight that is 249 grams
So how many moles of sodium thiosulfate weighs about 24.9 grams
Therefore
$1 \times 24.9 = X \times 249$
Hence option $A$ is correct.