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  4. Which among the following is the heaviest ?

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Q. Which among the following is the heaviest ?

KEAMKEAM 2006Some Basic Concepts of Chemistry

Solution:

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 .