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Mole Concept

Calculate the...

Question

Calculate the moles of $C a S O_{4}$ present in a pure sample of 1360 g $C a S O_{4} .$

15 mol

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25 mol

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10 mol

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20 mol

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Solution

The correct option is C 10 mol
The mass of 1 mole of $C a S O_{4} = 40 + 32 + 16 \times 4 = 136$ g

Therefore,
$1360 g C a S O_{4} = \frac{1360 g}{136 g / m o l} = 10 mol C a S O_{4}$

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