What type of process occurs when solidified wax is converted to liquid wax on heating?

2 Mg(s) + O₂(g) → 2 MgO(s) ΔH = −1204 kJ

Identify which of the following is true for the reaction N₂(g) + 3 H₂(g) → 2 NH₃(g)

Which has greater energy in an exothermic reaction, the reactants or the products?

What would likely happen if you were to touch the flask in which an endothermic

Without referring to tables, predict which of the following has the higher enthalpy in each case: (c) 1 mol H₂(g) and 0.5 mol O₂(g) at 25 °C or 1 mol H₂O(g) at 25 °C

Without referring to tables, predict which of the following has the higher enthalpy in each case: (b) 2 mol of hydrogen atoms or 1 mol of H₂