Number of atoms of He in 100 amu of He is :

Number of atoms of He in 100 atoms of He (at.mass 4 amu) is

The number of atoms of He in 104 amu is:

(A) The number of atoms in 52 mole of "He" is 31.3× 10^(24) (B) the number of atoms in 52amu of "He" is 13 (c) The number of atoms in 52g of "He" is 78.26× 10^(23) (D) The number of atoms in 52g of "He" is 52.26× 10^(23)

The number of atoms in 52 u of He is:

Calculate the number of atoms in 48 g of He?