General Knowledge - Chemistry - Discussion
Discussion Forum : Chemistry - Section 1 (Q.No. 24)
24.
What are the number of moles of CO2 which contains 16 g of oxygen?
Answer: Option
Explanation:
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.
Discussion:
13 comments Page 2 of 2.
Tanvi said:
1 decade ago
Mass of carbon (1 atom) = 12g.
Mass of oxygen (2 atoms) = 16*2 = 32g.
Given mass = 16g.
No.of moles = given mass/actual mass.
=16g/32g.
=0.5g.
Mass of oxygen (2 atoms) = 16*2 = 32g.
Given mass = 16g.
No.of moles = given mass/actual mass.
=16g/32g.
=0.5g.
Tenzin said:
1 decade ago
Very simple as one mole is equal to twelve items so one mole CO2 is 44g here out of which 32g is O2 means if oxygen is 16g then CO2 must be 22g so it is clear that CO2 is 22g as we have to convert it into moles it is 12/22 =0.5 moles which is the answer.
Manojkumar said:
1 decade ago
The atomic mass of O is 16 as from the question
at.wt of oxygen is 32
therefore no of moles=16/32==0.5
at.wt of oxygen is 32
therefore no of moles=16/32==0.5
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