Question

Which has more numbers of atoms 100gram of sodium or 100gram

of iron (Given atomic mass of Na=23, Fe=56)​

Answer 1

Answer:

Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)? Therefore, 100 grams of sodium contains more number of atoms than 100 grams of iron.

Answer 2

Answer: 100g of Na contains more atoms.

Explanation:

                     100g of Na = 100/23 moles of Na

                                         = 4.34 moles of Na

                     100g of Fe = 100/56 moles of Fe

                                         = 1.78 moles

1 mole = 6.022×10^23 atoms.

Therefore 100g of Na contains 4.34×6.022×10^23 atoms and

100g of Fe contains 1.78×6.022×10^23 atoms.