please explain each step thank you

Reactive metals such as magnesium react readily with acids in aqueous solution. 2.17g of Mg is added to 81.4mL of a 1.00Maqueous solution of HCl, producing an increase in temperature of 8.5C. 1st attempt Part 1 (1 point) Feedback Wit See Periodic Table 0 See Hint Remember to include states of matter in your equation. Write a balanced net ionic equation for the reaction that takes place. Mg(s)+2H+(aq)Mg2+(aq)+H2(g) Part 2 (1 point) Feedback If the molar heat capacity of 1.00MHCl is the same as that for water [cp=75.3J/(molC)], what is Hpen ? kJ