Calculate the ΔH for the reaction: CS2 (l) + 2 O2(g) CO2 (g) + 2 SO2 (g) Given: ΔHfCO2 (g) = - 393.5 kJ/mol; ΔHfSO2 = -296.8 kJ/mol; ΔHfCS2 (l) = 87.9kJ/mol

Determine the  ΔH of formation for sulfur trioxide gas if: 2 SO2 (g) +  O2 (g) --> 2 SO3 (g)    ΔH = -300 kJ SO2 (g)  -->    O2 (g) + S (s)    ΔH = 200 kJ The standard state of sulfur is S  (s).         - 350 kJ/mol     -500 kJ/mol     +200 kJ/mol     +100 kJ/mol     -400 kJ/mol

ΔH° f (kJ/mol) SO 2Cl 2( g) + 2 H 2O( l) → 2 HCl( g) + H 2SO4( l) ΔH° rxn = ? SO 2Cl 2( g) -364H 2O( l) -286HCl( g) -192H 2SO 4( l) +314

Use the information provided to determine ΔH°rxn for the following reaction:   ΔH°f (kJ/mol)              2 C2H2(g) + 5 O2(g) → 4 CO2(g) + 2 H2O(g)      ΔH°rxn = ?   C2H2          227   CO2(g)       -394   H2O(g)        -242  answers: + 2510 kJ -1130 kJ + 710 kJ -710 kJ -2510 kJ

Choose the correct ΔH0reaction for the reaction: 4 NH3(g) + 5 O2(g) → 4 NO(g) +  6 H2O(g) Compound ΔH0f (kJ/mol reaction) NH3(g) -46.0 NO(g) +90.0 H2O(g) -242 A) -908 kJ/mol reactions  B) -106 kJ/mol reactions C) +106 kJ/mol reactions D) -152 kJ/mol reactions E) +908 kJ/mol reactions F) +152 kJ/mol reactions

Given the information below, what is ΔGrxn for the reaction CO(g) → C(s) + ½ O2(g)?C(s) + O2(g) → CO2(g)     ΔGrxn = –394.4 kJCO(g) + ½ O2(g) → CO2(g)     ΔGrxn = –257.2 kJ

How much heat must be removed from a 90.5 g sample of benzene (M = 78.11 g mol-1) to cool the sample from 305 K to 215 K?  The following physical data may be useful.ΔfusH = 9.8 kJ mol-1ΔvapH = 30.8 kJ mol-1Cs(l) = 1.73 J g-1 K-1Cs(s) = 1.51 J g-1 K-1Cs(g) = 82.4 J g-1 K-1 Tm = 279.0 KTb = 353.3 K Note: The word 'removed' in the question already accounts for the negative sign involved in the heat transfer.   Express your answer to three significant figures.

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.