Given that: S(s) + O2(g) --> SO2(g); ΔH = -296.8 kJ/mol
2 SO3(g) --> 2 SO2(g) + O2(g); ΔH = +197.8 kJ/mol

Determine the enthalpy change of the reaction: 2 S(s) + 3 O2(g) --> 2 SO3(g)

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Explain what happens at the saturation point when adding salt to water at room temperature.

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of amu. (enter a whole number.) numerical answers expected! answer for blank 1: