Question

Calculate the number of moles in

a. 28 g of Nitrogen atom

b. 56 g of Sodium atom

Given atomic mass of N=14, Na =23​

Answer 1

Explanation:

NO. OF MOLES =

$\frac{given \: mass}{molar \: mass}$

Moles of nitrogen =

$\frac{28}{14}$

= 2 moles

Moles of sodium atom =

$\frac{56}{23}$

= 2.43 moles

I GUESS THERE SHOULD BE 46 INSTEAD OF 56 g OF SODIUM ATOM. BUT I CALCULATED WITH 56. IF YOU WANT ANSWER FOR 46 g OF SODIUM ATOM THEN THERE WILL BE 2 MOLES OF Na ATOM.