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Question

Hi,

Not quite sure how to do this question:

(i) In 2000, the mass of CO2 emitted in the UK was equivalent to 1kg per person in every hour.

Calculate the volume of 1kg of CO2. Assume that 1 mole of CO2 occupies 24dm3.

Thanks,

Rock

Answer 1

1 mol the gas occupies 24dm3

1 mol of the gas is 44 grams
(C=12, O= 16, 12+16+16=44)

1 kg = 1000 g

1000 g * 1mol/44g = 22.727 mol of CO2

22.727 mol CO2 * 24dm3/1mol = 545.448 dm3 of CO2

Answer 2

Convert the mass of CO2 into moles first:

1 kg = 1000 g
1000 g/12 g/mol = 83.33 moles

Then, using the information that 1 mol = 24 dm^3, find the total volume (Just multiply 83.33 mol X 24 dm^3/mol)

Answer 3

1 kg = 1000 g CO2. If 1 mole of CO2 weighs 44 g, then x mole = 1000 g. x = 22.73 moles.

22.73 moles * 24 dm3 / mole = 545.45 dm3