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Question

How many moles are there in 52g of helium?

A
13 moles
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B
15 moles
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C
20 moles
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D
8 moles
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Solution

The correct option is A 13 moles
Molar mass of Helium = 4g
The given mass of Helium = 52g
Thus the number of moles of Helium = given massmolar mass
524=13 moles

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