112L of CO2 gas is taken at STP.
a.What is the mass of CO2 taken? (2)
b.Find the number of molecules present in it.
(1)(Atomic mass C=12,O=16
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Answer:
22.4 litres of CO
2
has 44grams weight. It is 1 mole.
In 11.2 litres of CO
2
, only it weighs 22grams. It is 0.5 mole.
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