Answer:
[tex]M=147.014 g/mol[/tex]
Explanation:
The atomic weights of the elements:
Ca=40.078 g/mol
Cl=35.453 g/mol
H=1.008 g/mol
O=15.999 g/mol
The calcium chloride dihydrate:
[tex]M=(40.078+35.453*2+2*2*1.008+2*15.999)g/mol[/tex]
[tex]M=147.014 g/mol[/tex]