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MHT CET 202621 AprilEvening Shift
Exam
MHT CET
Year
2026
Date
21 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

MHT CET 2026 · 21 April · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

What is the gram atomic mass of an element whose mass of one atom...

What is the gram atomic mass of an element whose mass of one atom is 3.9853×10−23 g3.9853 \times 10^{-23}\ \text{g}?

Options

  1. A23 g23\ \text{g}
  2. B24 g24\ \text{g}
  3. C27 g27\ \text{g}
  4. D16 g16\ \text{g}

Correct answer

B. 24 g24\ \text{g}

Step-by-step solution

Gram atomic mass is the mass of one mole of atoms of the element.

Gram atomic mass=Mass of one atom×NA\text{Gram atomic mass} = \text{Mass of one atom} \times N_A

Given mass of one atom = 3.9853×10−23 g3.9853 \times 10^{-23}\ \text{g}

NA=6.022×1023 mol−1N_A = 6.022 \times 10^{23}\ \text{mol}^{-1}

Gram atomic mass=3.9853×10−23×6.022×1023\text{Gram atomic mass} = 3.9853 \times 10^{-23} \times 6.022 \times 10^{23}

Gram atomic mass=23.999≈24 g\text{Gram atomic mass} = 23.999 \approx 24\ \text{g}

Answer: 24 g24\ \text{g}
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