which of the following has more atoms 110g of hydrogen atoms
which of the following has more atoms: 1.10g of hydrogen atoms or 14.7 g of chromium atoms?
Solution
mass of H atoms = 1.10 g
moles of H atoms = 1.10 mol
number of H atoms = 1.10 x 6.023 x 10^23
= 6.62 x 10^23 atoms
mass of Cl atoms = 14.7 g
moles = 14.7 / 35.45 = 0.415 mol
number of Cl atoms = 0.415 x 6.023 x 10^23
= 2.50 x 10^23 atoms
so 1.10g of hydrogen has more atoms
