The average mass of zinc in tablets - 0.16mg - Agree With
Titration question, [HCl] = 1.057 mol/L - I got like 0.02
The identitfy of gas = H2(g) -yep
Highest energy released by: Hydrogen gas fuel -yep yep
Amount of energy released by 80L petrol = 2.6 x 106 kJ , or something like...