Question

Which has more no of atoms, 10gm of iron or 100gm of zinc

Answer 1

56 gm Iron has 6.023×10²³ atoms

So, 10gm Iron has x atoms

Therefore, x = 6.023×10²³×10÷56

x = 1.075×10²³ atoms.

65.3gm zinc has 6.023×10²³ atoms

So 100gm zinc has x atoms

Therefore, x = 6.023×10²³×100÷65.3

x = 9.22×10²³ atoms.

Hence, number of atoms in the latter is more.