Aqa chemistry question

Hi! I'm very confused on these sorts pf questions in the kinetics topic.. what happens to the curve when there's a change in concentration and volume? How do I weight this sort of stuff up to get the final graph?
The student used 100 cm3
of a 1.0 mol dm–3 solution of hydrogen peroxide at 298 K and
measured the volume of oxygen collected.
Curve R, in each of Figures 1, 2 and 3, shows how the total volume of oxygen collected
changed with time under these conditions.
(a) Draw a curve on Figure 1 to show how the total volume of oxygen collected will
change with time if the experiment is repeated at 298 K using 100 cm3
of a
2.0 mol dm–3 solution of hydrogen peroxide.
(b) Draw a curve on Figure 2 to show how the total volume of oxygen collected will
change with time if the experiment is repeated at 298 K using 100 cm 3
of a
0.4 mol dm–3 solution of hydrogen peroxide.