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Atoms and Molecules — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceAtoms and Molecules1 Mark
MCQ
One mole of $\mathrm{H}_2 \mathrm{O}$ corresponds to
  • A
    22.4 litre at 1 atm and 250°C
  • B
    $6.023 \times 10^{23}$ atoms of hydrogen and $6.023 \times 10^{23}$ atoms of oxygen
  • ✓
    18 g
  • D
    1 g.
✓

Answer

Correct option: C.
18 g
(c) 18 g
Hint: One mole = Molar mass = 2 + 16 = 18 g.

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