Question

1: Molecular mass of Nitrogen is 26
a) How many moles of molecules are there in 56gram Of Nitrogen?
b)How many molecules are there in it?
c) calculate the number of nitrogen atoms present in 28g of Nitrogen.​

Answer 1

Answer:

Number of moles = 56/26 = 2.15

No of molecules = Number of moles × Avogadro number = 2.15 ×6.022 × 10^23

Atomic mass of nitrogen = 14

Number of moles = 28/14 = 2

No of atoms = 2× 6.022×10^23

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