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Question

How many moles of aluminium sulphate, Al2(SO4)3 will contain 0.24 mole of oxygen atoms?

A
2.0×102
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B
2.0×102
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C
3.0×103
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D
1.5×102
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Solution

The correct option is B2×102moles

A mole of aluminium sulphate contains 12 moles of oxygen


So 112×0.24 moles of aluminium sulphate contains 0.24 moles of oxygen

That is, 2×102 moles of aluminium sulphate contains 0.24 moles of oxygen

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