State which of the following has more number of atoms?(a) 100 g of Sod

1.	State which of the following has more number of atoms?(a) 100 g of Sodium (b) 100 g of Iron(Given Atomic mass of Na023 u, Fe 5 5Q)
Answer» Gram atomic mass of sodium = 23g 1 mole or 23g of sodium contains6.023 X 10^23atoms Then 100g of of sodium contains --------atoms = 100 X 6.023 X 10^23/23 = 2.6182 X 10^24atoms Gram atomic mass of iron = 56g 1 mole or 56 g of iron contains6.023 X 10^23atoms Then 100g of iron contains ----------atoms = 100 X6.023 X 10^23/ 56 = 1.0753 X 10^24 Therefore, 100g of sodium contains more number of atoms than 100g of iron.

State which of the following has more number of atoms?(a) 100 g of Sodium (b) 100 g of Iron(Given Atomic mass of Na023 u, Fe 5 5Q)

Answer»

Gram atomic mass of sodium = 23g

1 mole or 23g of sodium contains6.023 X 10^23atoms

Then 100g of of sodium contains --------atoms

= 100 X 6.023 X 10^23/23 = 2.6182 X 10^24atoms

Gram atomic mass of iron = 56g

1 mole or 56 g of iron contains6.023 X 10^23atoms

Then 100g of iron contains ----------atoms

= 100 X6.023 X 10^23/ 56 = 1.0753 X 10^24

Therefore, 100g of sodium contains more number of atoms than 100g of iron.