Dua

. Determine the mass of methanol that can be heated from 30.2 °C to 45.8 °C if 1.00 kJ of energy is added . (cmethanol = 2.92 J/(g °C))

Write the formation reaction for ammonium acetate, NH4C2H3O2(s)

Phosphuric acid, H3PO4, can be prepared by the reaction of phosphorus (V) oxide, P4O10, with water. 1/4P4O10(s) + 3/2H2O(l) → H3PO4(aq); ∆H = -113.2kJ Write the thermochemical equation and ∆H value for the reaction involving 1 mol P4O10

Sucrose, C12H22O11, is table sugar, and it has a ∆Hc of –5639.7 kJ/mol. Determine the ∆Hf of sucrose given ∆Hf (H2O(l)) = –285.8 kJ/mol, and ∆Hf (CO2(g)) = –393.5 kJ/mol . C12H22O11(s) + O2(g) → CO2(g) + H2O(l)

Determine the enthalpy of the following reaction given the three reaction equations below: 2 H2S(g) + SO2(g) → 3 S(s) + 2 H2O(g) H2O(g) → H2(g) + O2(g) H = 241.8 kJ H2S(g) → H2(g) + S(s) H = 20.6 kJ S(s) + O2(g) → SO2(g) H = –296.8 kJ

Use bond energies to determine the enthalpy for the following reaction HCN(g) + H2(g) → CH3NH2(g)