Question

Calculate the no of moles of Ca in 120g [given: at.mass of Ca= 40g/mol]
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Answer 1

Your answer:

No. of moles of a compound =  $\frac{Given\:\:mass\:\:of\:\:the\:\:compound}{Molar\:\:mass\:\:of\:\:the\:\:compound}$

Given mass = 120g

Molar mass = 40g

So, no. of moles = $\frac{120}{40}$ = 3 moles

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Answer 2

Answer:

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