Question

calculate the number of moles in 40g of calcium​

Answer 1

Answer:

As the atomic mass of calcium is 40g. so , this 40 g is can be said to be one mole of calcium atom. One mole of any substances contain the number of molecules or atoms equal to 6.022×10^23.

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Answer 2

Answer:

1 gram

Explanation:

no.of mole=n

given mass(m)=40g

molar mass(M)=Ca=40g

n =m/M

n=40g/40g

n=1g