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  3. Chemistry
  4. Which of the following has the highest mass?

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Q. Which of the following has the highest mass?

Some Basic Concepts of Chemistry

Solution:

(b) Molecular mass of $CO _{2}=44\, g\, mol ^{-1}$

$\therefore 4 mol$ of $CO _{2}=44 \times 4=176\, g$

(c) $6.023 \times 10^{23}$ atoms of hydrogen has mass $=1.008 \, g$

$=12 \times 10^{24}$ atoms of hydrogen has mass $=20.1 \, g$

(d) $22.4\, L$ of helium at N.T.P. has mass $=4 \, g$

$11.2\, L$ of helium at N.T.P. has mass $=2\, g$

Thus; 4 moles of $CO _{2}$ has maximum mass