1.

The atomic mass of Calcium is 40. Calculate the number of moles in 16 g of Calcium.

Answer»

0.4 mole
4 moles
640 moles
1/4 mole

Solution :HINT : `"Mole"=("MASS")/("Atomic mass")=(16)/(40)=(8)/(20)`
`=(4)/(10)=0.4" mole"`


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