Question

Calculate the no. of atom the following :-52 moles of He ,52 a.m.u of He , 52g of He

Answer 1

 1 atom of He = 4 u of He

4 u of He = 1 Atom of He

∴ 52 u of He = 1/4 × 52 = 13 atoms






1 mol of He = 4 g = 6.022×1023atoms

∴ 52 g of He = (6.022×1023/4) × 52 atoms = 7.8286×1024atoms








4g of He has 1 mole 
1g of He has 1/4 mole 
52g of He has 1/4x52 = 13 moles 

1 mole=6.022x10^23atoms

Answer 2

This is the answer of the question