Answers

2014-01-12T21:10:20+08:00
 Molar mass is the sum of all masses. So, if Ca(OH)2. You have to get the atomic mass of each element.
 Ca= 40
 O= 16
H = 1

M= 40 + 2(16+1) 
   = 40 + 2(17)
 = 40 + 34
 Molar Mass  = 74  gram/mole
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