Question

Calculate the no of moles for the following

a)2.8 g of Nitrogen atom​

Answer 1

Answer:

1.2 × 10^23 molecules

Explanation:

moles =mass /relative molecular mass

2.8÷14=0.2

one mole = 6.0 ×10^23

therefore,0.2×6.0×10^23 =1.2×10^23

Answer 2

Answer:

hope this answer will be helpful