Calculating the volume of a certain number of moles
2 marks · NormalYou measured a gas volume as 500 cm³. Convert it into dm³ and explain how you did the conversion.
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0.5 dm³; divide by 1000 dm³ (±0.01)
Must show: States 0.5 dm³, Describes division by 1000
Also accept: 500 cm³ ÷ 1000 = 0.5 dm³
Common mistakes: Multiplying instead of dividing; Wrong conversion factor
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Marking points
A1 · 1 mark · Gives the converted value as 0.5 dm³.
M1 · 1 mark · Correctly states division by 1000 as the method.
Worked solution
Divide by 1000: 500 cm³ ÷ 1000 = 0.5 dm³.
I did this because 1 dm³ = 1000 cm³, so you divide by 1000.