Question

Calculate the formula mass of NaCl and cacl2

Answer 1

Atomic mass of Na = 23

Atimic mass of Cl = 35.5

Atomic mass of Ca = 40

Atomic mass of Cl2 = 35.5X 2= 71

Therefore Nacl= 23+35.5=58.5u and

Cacl2= 40+ 71= 111u