Question

calculate number of moles present in 28g of nitrogen molecule
(i)2 moles
(ii)1 moles
(iii)1.5moles
(iv)moles​

Answer 1

Answer:

the correct answer is 1) 2 moles

Answer 2

$\huge\fcolorbox{red}{cyan}{1\:mole}$

Explanation:

• Molecular Mass Of N2 :-

$2 \times At.\:Mass\:Of\:'N' \\ => 2 \times 14 \\ => \boxed{28\:u}$

Therefore The Molecular Mass Of N2 is 28

• So, Gram Molecular Mass = 28 g

By Mole Concept :-

• Gram Molecular Mass = 1 mole

Therefore 28 g = 1 mole