12 (a crossword that had 7 spaces)

Based on the equation and the information in the table, what is the enthalpy of the reaction?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?