Answer:
The RMM of Ca (OH)2 is
40+ (16+1)2
40+(17)2
40+34
74
The RMM of Al2SO4 is
(27×2)+32+(16×4)
54+32+64
=150
Explanation:
Note that the RAM of:
Ca=40
O=16
H=1
Al=27
S=32
