Question

How many moles are present in 40g of He?

a. 10 moles

b. 11 moles

c. 13 moles

d. 12 moles

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Answer 1

Answer:

10 moles

Explanation:

40/4=10

Answer 2

Explanation:

Molar mass of Helium =4g

The given mass of Helium =52g

Thus the number of moles of Helium =givenmass/molarmass

=52/4

=13