Which amongst the following has more no: of atoms? 11.5 g of sodium or 15 g of calcium?

Given Na = 23 u. Ca= 40u

Question

Which amongst the following has more no: of atoms? 11 5 g of
sodium or 15 g of calcium?
Given Na = 23 u Ca= 40u

Arti Gujrati · Accepted Answer

1) Moles of atom in 11 5 gram of Na sample = 11 5 /23 = 0 5
moles of Na
2) Moles of Ca in 15 gram of Ca sample = 15/40 = 0 375 mole
of Ca

So 11 5 gram of Na contains more no of atoms