Question

Find out the number of moles of molecules present in the samples given below (GMMN₂ = 28g, H₂O= 18g) 

a. 56g N₂ 

b. 90g H₂O

Answer 1

a. Number of mol molecules =\(\frac{Mass}{GMM}\) = \(\frac{56}{28}\) = 2

b. Number of mol molecules = \(\frac{90}{18}\) = 5