Question: If 10²¹ molecules are removed from 200mg of CO₂, then the number of moles of CO₂ left are [IIT 1983]
(a) 2.85 10^-3
(b) 28.8 10^-3
(c) 0.288 10^-3
(d) 1.68 x 10^-2
Correct Answer: (a) 2.85 10^-3
Question: If 10²¹ molecules are removed from 200mg of CO₂, then the number of moles of CO₂ left are [IIT 1983]
(a) 2.85 10^-3
(b) 28.8 10^-3
(c) 0.288 10^-3
(d) 1.68 x 10^-2
Correct Answer: (a) 2.85 10^-3
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