1g of hydrogen contain 6 * 10 23 atoms the atomic weight of helium is 4u it follows that - Science - Acids Bases and Salts

Question

1g of hydrogen contain 6 * 10 23 atoms the atomic weight of helium
is 4u it follows that the number of atoms in 1g of he is;

Avni · Accepted Answer

Since atomic weight of H is 1 u, 1 g means 1 mole
1 mole of Hydrogen contains 6*1023 atoms
No of moles in 1 g of He = 1/4 = 0 25 mol
No of atoms in one mole = â€‹
6*1023
No of atoms in 0 25 moles = 0 25*6*1023 = 1
5*1023 atoms

1g of hydrogen contain 6 * 10 23 atoms.the atomic weight of helium is 4u .it follows that the number of atoms in 1g of he is;