Butane C4 H10 (g), (Hf = - 125.7), combusts in the presence of oxygen to form CO2 (g) (Hf = - 393.5 kJ/mol), and H2O (g) (Hf = - 241.82) in the reaction: What is the enthalpy of combustion, per mole, of butane? Use

Question 17 What do you call the mixture that forms when salt is dissolved in water?

Explain Gay-Lussac's Law in terms of the kinetic-molecular theory.

Which statement best describes the way a catalyst works? A. It decreases the value of ΔH. B. It increases the value of Eact. C. It increases the value of ΔH. D. It increases the value of ΔG. E. It decreases the value of Eact.

Which substance yields hydroxide ion as the only negative ion in aqueous solution?

Which is the correct Lewis structure for hydrogen peroxide, H2O2? :H-o-o-H: H-o-o- H-0-0-H B. -o-H. D. =- H=:- E. A. A B. B C. C D. D

A flexible vessel contains 43L of gas where the pressure is 1.3 atm. What will the volume be when the pressure is 0.61 atm, the temperature remaining constant?

What are the 4 variables that influence gas behavior

Describe three characteristics that trees used to build treehouses should have. why are these characteristics essential

Select the correct value for the indicated bond angle in each of the following compounds: O-S-O angle of SO2 F-B-F angle of BF3 Cl-S-Cl angle of SCI2 O-C-O angle of CO2 F-P-F angle of PF3 H-C-H angle of CH4

What is the shape of a molecule with a triple bond?