MCQ
Mole Concept
By Sakshi Goel | 18 May'20 | 645 Views
MCQ
Problem:
Solution:
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Which of the following possess highest mass?
(a) 0.2 mol of CO2 gas
(b) 2.24 L SO2
(c) 3.01 x 1023 molecules of water
(d) 20 g calcium
Solution:
For option (a),
1 mole of CO2 = 44 g
then, 0.2 mol of CO2 = 0.2 x 44 = 8.8 g
For option (b),
22.4 L of SO2 = 1 mole = 64 g
2.24 L of SO2 = (2.24/22.4) x 64 = 6.4 g
For option (c),
6.02 x 1023 molecules of water = 1 mole = 18 g
3.01 x 1023 molecules of water = (3.01/6.02) x 18 = 9 g
For option (d),
mass given = 20 g calcium
So, correct option is (d).
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