In which of the following processes is heat LOST to the surr…
In which of the following processes is heat LOST to the surroundings?(i.) methane burning: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g) ΔH = -802 kJ (ii.) ice melting: H2O(s) → H2O(l) ΔH = +5.6 kJ(iii.) salt dissolving: NaCl(s) → Na+(aq) + Cl-(aq) ΔH = +4.14 kJ