Question

Which of the following has maximum mass :
(1) 0.1 gram atom of carbon
(3) 6.02 x 1022 molecules of hydrogen
(2) 0.1 mol of ammonia
(4) 1120 cc of carbon dioxide at STP
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Answer 1

6.20x 1022 molecules of hydrogen

Answer 2

Answer:

a) 0.1g atom of carbon = 0.1 mole of C = 0.1 x 12g = 1.2 g

b) 0.1 mole of ammonia = 0.1 x 17 = 1.7 g

c) 6.02 x 10^22 molecules of hydrogen

= (6.02 x 10^22)/(6.02 x 10^23)

= 0.1

0.1 mole Hydrogen = 0.1 x 2 = 0.2 g

d) 1120cc of CO2: Mole = 1120/22400 = 1/20 mole

mass = 1/20 x 44 = 2.2g

Hence, correct option is (d)