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# Calculate the number of moles of C and O atoms In 11g of carbon dioxide watch

1. Hey guys I'm kind of confused by this question.

I know that moles = mass/Mr

The question is

b) Calc the number of moles of C atoms in 11 g of CO2

c) Calc the number of moles of O atoms in 11 g of CO2

So I know the Mr is 44 so the amount of moles of CO2 is 0.25 in 11g.

I saw that the answer for b) was 0.25 as 11/44 X 1 = 0.25.

I'm confused as to why this has been done... is it because there is 1 atom of Carbon in the compound?
2. (Original post by amaraub)
Hey guys I'm kind of confused by this question.

I know that moles = mass/Mr

The question is

b) Calc the number of moles of C atoms in 11 g of CO2

c) Calc the number of moles of O atoms in 11 g of CO2

So I know the Mr is 44 so the amount of moles of CO2 is 0.25 in 11g.

I saw that the answer for b) was 0.25 as 11/44 X 1 = 0.25.

I'm confused as to why this has been done... is it because there is 1 atom of Carbon in the compound?
Yes. Pretty sure that's why but it's been a few months since A level chemistry
3. (Original post by SGHD26716)
Yes. Pretty sure that's why but it's been a few months since A level chemistry
aight thanks man. i'm just a bit confused by the concepts

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