Question:
Which of the following would weigh the maximum?
(a) $0.2$ mole of sucrose $\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)$
(b) 2 moles of $\mathrm{CO}_{2}$
(c) 2 moles of $\mathrm{CaCO}_{3}$
(d) 10 moles of $\mathrm{H}_{2} \mathrm{O}$.
Solution:
(c).
(a) $0.2 \times 342 \mathrm{~g}=68.4 \mathrm{~g}$
(b) $2 \times 44 \mathrm{~g}=88 \mathrm{~g}$
(c) $2 \times 100 \mathrm{~g}=200 \mathrm{~g}$
(d) $10 \times 18 \mathrm{~g}=180 \mathrm{~g}$.
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