Which of the following would weigh the highest? (a) 0.2 mole of sucrose (C12 H22 O11) (b) 2 moles of CO2 (c) 2 moles of CaCO3 (d) 10 moles of H2O
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
Soln:
Answer is (c) 2 moles of CaCO3
Explanation:
Weight of a sample in grant = Number of moles x Molar mass
- 2 moles of Ci2H220„ = 0.2 x 342 = 68.4 g
- 2 moles of CO is 2 x 44 88 g
- 2 moles of CaCO? 2 x IIMI - 200 g (4) 10 moles of I-120 = 10 x 18 - 1St g Hence, option (c) is correct.
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