Question

Which among the following is the heaviest ?

• A. 1 mole of oxygen
• B. 1 molecule of sulphur trioxide
• C. 100 u of uranium.
• D. 44 g of carbon dioxide

Answer 1

Answer: (D)

44 g of carbon dioxide

Answer 2

The weight of one mole of oxygen = 16 g
Weight of one molecule of
$SO_3 = 80/ (6 \times 10^{23})g$
Weight of 100 u of uranium = $100 \times 1.66 \times 10^{-24}g$
Weight of 10 moles of hydrogen = 10 g
Weight of $CO_2$ = 44 g
Hence, 44 g of $CO_2$ is the heaviest among these .