Without doing any calculations, determine whether the standard entropy change, ΔS°is positive or negative for each of the following reactions. reaction 1: C(graphite) + O2(g) → CO2(g)reaction 2: 2 CO(g) + O2(g) → 2 CO2(g

Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas. caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible. relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)