Question

please solve this

Fine the molecular mass of
MgCl2 of Mg- 24,Cl35.5

CaO of C-12 ,O-16

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Answer 1

Answer:

Correct option is

A

111 u

Formula unit mass = Atomic mass of Ca+(2×atomic mass of Cl)=40+71=111

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Answer 2

Answer:

Explanation:

1)MgCl2= 24+35.5+35.5

⇒95

2)CaO= 12+16

⇒28