Question

Which of the following would weigh the least?

(Atomic masses C = 12, 0 = 16, Na = 23)

Options

• 2 gram atoms of oxygen

• One mole of sodium

• 22.4 litres of carbon dioxide at STP

• 6.023 × 10²² atoms of carbon

Answer 1

6.023 × 10²² atoms of carbon