Question

How many moles are there in $200g$ of $Na$?

Answer 1

Molecular mass of $Na=23g/mole$

$No.ofmole=\frac{mass}{molarmass}$

In $200g$ of $Na$ moles is:

$n=\frac{200g}{23g/mole}$

$n=8.69molesofNa$