5.1.1 - gas volumes

Question 1

how are volumes of gas measured

Answer 1

in cubic centimetres (cm^3)

or cubic decimetres (dm^3)

Question 3

how do you get from cm^3 to dm^3

Answer 3

divide by 1000

Question 4

how do you get from dm^3 to cm^3

Answer 4

x1000

Question 5

how can you calculate moles of gas

Answer 5

moles = volume (dm^3) / 24

moles = volume (cm^3) / 24,000

Question 6

what would be the steps to answer a question like this:

calculate the volume of O2 needed to react with 10g of N2

Answer 6

1) convert mass of N2 into moles of N2
2) use the mole ratio from the balancing numbers in the equation
3) convert moles of O2 into volume of O2