(a)[1]
Name the salt produced when magnesium reacts with dilute hydrochloric acid.
(b(i))[2]
Describe the way the rate of reaction alters with time. Use the graph to support your answer.
(b(ii))[1]
How many seconds were needed to collect the first $25\,\text{cm}^3$ of hydrogen?
(b(iii))[2]
Draw the line on the grid for the experiment at the higher temperature.
(b(iv))[1]
Calculate the mass of magnesium required to produce 0.8 g of hydrogen using an excess of dilute hydrochloric acid.