Question

25. a) Calculate % of 'S' in CaSO4​

Answer 1

CaSO4 = Ca + S + 4O

Atomic mass of Ca = 40

Atomic mass of S = 32

Atomic Mass of 4 x O = 4*16=64

Total atomic mass = 40+32+64=96+40=136 u

% of S = 32/136 *100% = 0.235294118 * 100 = 23.5 %

Answer 2

Answer:

Mass percent of S =32/136(100)=23.52%

Explanation: