Use the reactions given below to determine the ∆H^o rxn in kJ/mol rxn. ½ H2(g) + ½ I2(s) → HI(g) ∆H = 26 kJ/mol rxn
½ H2(g) + ½ I2(g) → HI(g)∆H = −5.0 kJ/mol rxn

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

What are the major types of a chemical compound

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .