Magnesium reacts with sulfuric acid in an exothermic reaction. (a) Write an equation for the reaction.Include state symbols in your answer. A student carried out an experiment to determine the

enthalpy change of the reaction. A sample of 0.50 g of magnesium powder was added to25 cm' of 0.20 mol dm" sulfuric acid. Calculate the number of moles of magnesium and of sulfuric acid that reacted.Justify your answer. stUse your graph to determine the maximum change in temperature.You must show your working on the graph. (d) Calculate the standard molar enthalpy change for the reaction, using your answers to (b) and (c)(ii). Include a sign and units in your answer. \text { [Specific heat capacity of solution }=4.18 \mathrm{~J} \mathrm{~g}^{-1}{ }^{\circ} \mathrm{C}^{-1} \text { ] }