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NEET 2002
Exam
NEET
Year
2002
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

NEET 2002 · Chemistry · Some Basic Concepts of Chemistry

Which has the maximum molecules?

Which has the maximum molecules?

Options

  1. A7g N27 g \mathrm{~N}_2
  2. B2H22 \mathrm{H}_2
  3. C16 gNO216 \mathrm{~g} \mathrm{NO}_2
  4. D16O216 \mathrm{O}_2

Correct answer

B. 2H22 \mathrm{H}_2

Step-by-step solution

no. of moles = mass of molecule/ molecular weight. 7g N2→728=0.257 g \mathrm{~N}_2 \rightarrow \frac{7}{28}=0.25 moles 2 gH2→22=12 \mathrm{~g} \mathrm{H}_2 \rightarrow \frac{2}{2}=1 mole 16 gNO2→1646=0.347moles16 \mathrm{~g} \mathrm{NO}_2 \rightarrow \frac{16}{46}=0.347 \mathrm{moles} 16 gO2→1632=0.516 \mathrm{~g} \mathrm{O}_2 \rightarrow \frac{16}{32}=0.5 moles
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