(a)[1]
Why is copper used in excess?
(b)[1]
Why is the gas cooled to room temperature before the final volume is measured?
(c(i))[3]
Plot the data on the graph and draw a line of best fit.
(c(ii))[1]
Circle the anomalous point on the graph.
(c(iii))[1]
Suggest a reason for the anomalous result.
(d(i))[1]
Using your graph, determine the final gas volume when the initial volume is $100\text{ cm}^3$.
(d(ii))[1]
Using your answer to (d)(i), calculate the percentage of oxygen in the air.