What is ΔSsurr (in J/K) if ΔHsys is -27.2 kJ and T is 379 K?

Using the values provided in the table below, calculate ΔHr for the following reaction: 2CO2(g) + 4H2O(g) → 2CH3OH(l) + 3O2(g)  a. -2158 kJ mol–1 b. 1354 kJ mol–1 c. -402 kJ mol–1 d. -435 kJ mol–1 e. -1354 kJ mol–1

If a given reaction is A + B --> 2C with ΔH = -8.8 lJ and the needed reaction is 2A + 2B --> 4C, what is the ΔH for the needed reaction?

Balance the following equation and calculate its ΔSo in units of J mol-1 K-1.   Fe(s) + H2O(l) → Fe3O4(s) + H2(g)   Fe(s) - 27.3 J mol-1 K-1 H2O (l) - 70 J mol-1 K-1 Fe3O4 (s) - 146.4 J mol-1 K-1 H2 (g) - 130.7 J mol-1 K-1

The value of ΔE for a system that performs 190 kJ of work on its surroundings and gains 250 kJ of heat is in kj?

Given the following thermochemical equations, find ΔH° for the following reaction: 2NH3(g) + 2O2(g) ⟶ N2O(g) + 3H2O(l)                               ΔH˚ = ?   2NH3(g) + 4SO3(g) ⟶ N2O(g) + 4SO2(g) + 3H2O(l)            ΔH˚ = -290 kJ 2SO3(g) ⟶ 2SO2(g) + O2(g)                                                  ΔH˚ = 197 kJ

Calculate the change in internal energy (ΔE) for a system that is giving off 3.0 kcal of heat and is changing from 1.00 L to 8.00 L in volume at a pressure of 2.00 atm. (Remember that 101.3 J = 1 L∙atm; 1 cal = 4.18 J)

Titanium(IV) oxide is commonly used as a white paint pigment. The compound is produced by the reaction TiCl 4(g) + 2 H 2O(g)↔ TiO 2(s) + 4 HCl(g) What is ΔH° rxn (in kilojoules)? TiCl 4(g) ΔH f o = -763 kJ/molH 2O(g) ΔH f o = -241.8 kJ/mol.HCl(g) ΔH f o = -92 kJ/mol.TiO 2(s) ΔH f o = -945 kJ/mol.

If a given reaction is A + B --> 2C with ΔH = 123.4 kJ and the needed reaction is 2A + 2B --> 4C, what is the ΔH for the needed reaction?