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MHT CET 202623 AprilEvening Shift
Exam
MHT CET
Year
2026
Date
23 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

MHT CET 2026 · 23 April · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

Find the mass of 1 molecule of H_2SO_4 in grams.

Find the mass of 1 molecule of H2SO4\text{H}_2\text{SO}_4 in grams.

Options

  1. A1.605×10−221.605 \times 10^{-22} g
  2. B1.665×10−221.665 \times 10^{-22} g
  3. C1.647×10−221.647 \times 10^{-22} g
  4. D1.627×10−221.627 \times 10^{-22} g

Correct answer

D. 1.627×10−221.627 \times 10^{-22} g

Step-by-step solution

Molar mass of H2SO4\text{H}_2\text{SO}_4 is 2(1)+32+4(16)=98 g/mol2(1) + 32 + 4(16) = 98 \text{ g/mol}

Number of molecules in 1 mole=6.022×10231 \text{ mole} = 6.022 \times 10^{23}

Mass of 1 molecule=986.022×1023 g1 \text{ molecule} = \dfrac{98}{6.022 \times 10^{23}} \text{ g}

Mass of 1 molecule=16.27×10−23 g=1.627×10−22 g1 \text{ molecule} = 16.27 \times 10^{-23} \text{ g} = 1.627 \times 10^{-22} \text{ g}

Answer: 1.627×10−221.627 \times 10^{-22} g
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