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General Knowledge · Q25

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Competitive Exams · General Knowledge · question 25

Q25

What are the number of moles of CO2 which contains 16 g of oxygen?

A.
0.5 mole
Answer
B.
0.2 mole
C.
0.4 mole
D.
0.25 mole

Answer: Option A

Solution

Answer: Option A
Solution:
One mole of CO2 has mass of 44 g and 32 g of O2.
So 16 g of O2 have 22 g of CO2 or 0.5 moles of it.
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