Okay so I'm doing an assignemtn and one of the questions has stumped me. It asks:
The solid fuel booster rockets on the space shuttle employ a mixture of aluminium and ammonium perchlorate. The reaction is:
2Al(s) + 2NH4ClO4(s) → Al2O3(s) + 2NO(g) + 3H2O(g) + 2HCl(g)
Use the information in the table below to calculate the enthalpy change when 7.77 x 105 kg of aluminium reacts in this manner with a slight excess of ammonium perchlorate. Express your answer in scientific notation.
Compound