# Question #7bc7d

Jun 2, 2017

$169.2$g

#### Explanation:

One mole of any substance has a mass equal to the substance's relative formula/atomic mass.
Calcium has a relative atomic mass of 40, so 4.23 moles would have a mass of $40 \times 4.23 = 169.2$g

Hope this helps; ket me know if I can do anything else:)

Jun 2, 2017

n (no. of moles) = given mass(m)/ molecular mass(M)

#### Explanation:

so 4.23 moles= reqd mass/ 40 ( molecular mass of Ca=M=40g)
so m= 4.23*40=169.2 g ( ans)
.........................hope it helps......................................:)