HELIUM GAS IS MONOATOMIC . WHAT WILL BE THE MASS OF 6.022 X 1024ATOMS IN HELIUM
rnGiven:
Number of atoms in He gas = 6.022 X 1024
Molar mass = 4u
Number of atoms = ( mass / molar mass) * Avogadro number
6.022 X 1024 = ( mass / 4) * 6.022 * 1023
Mass = ( 6.022*1024 / 6.022*1023 ) * 4
= 40g
So. 40g He gas contains 6.022*1024 atoms.