Question

Plz urgent do ques 1 and 6

Answer 1

(1) 15.95 + 8 = 9.75 + 14.2

23.95 = 23.95

The law of conservation of mass is shown here.

(6) Atomic mass of Na= 23 g

Atomic mass of Cl=35.5 g

Formula unit mass of NaCl: 23 + 35.5 = 58.5 g/

Atomic mass of CaCl2= 40 g

Atomic mass of Cl= 35.5 g

Formula unit mass of CaCl2: 40 + 35.5 x 2 = 40 + 70 = 110 g