Question

Question 10. How many moles are there in 52 g of He? (Atomic mass of He= 4 u)Required to answer. Single choice.

(a) 13

(b) 13* Avogadro number

(c) 52 * Avogadro number

(d) 4 * Avogadro number​

Answer 1

Answer:

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Answer 2

Answer:

Molar mass of Helium =4g

The given mass of Helium =52g

Thus the number of moles of Helium =givenmass/molarmass

                                                                =52/4

                                                                  =13

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