Question

yor are given 1.5×10 23 atoms of hydrogen,1g atom of sulphur, 80gm os oxygen,calculate
a. The total No of atoms
b. The total No of grams atoms
c. The total mass of atoms

Answer 1

Knowing Avogadro's constant, 32 grams of O2 would have 6.022E23 molecules. Since each molecule of O2 has two atoms, there are 1.204E24 atoms. 32 gm of oxygen has 2 x 6.023x10^23 atoms. Since, oxygen exists in our nature as a molecule O2.