Determine whether the following reaction is a redox reaction. If it is, identify the element that is oxidized, the element that is reduced, the oxidizing agent, and the reducing agent. C8H18(g) + 25O2(g) → 16CO2(g) + 18H2O(l)

What are the bond angles around a central atom with sp2 hybridized orbitals?

Use the following enthalpies of formations (∆Hof): C6H6(l) H2O(g) CO2(g) ∆Hof 49 kJ/mol -242 kJ/mol -394 kJ/mol to calculate the standard enthalpy of reaction (∆Horxn) for the following reaction: 2C6H6(l) + 15O2(g) → 12CO2(g) + 6H2O(g) ∆Horxn = ?

How many double bonds are present in the Lewis structure of NO3- in which the formal charge of nitrogen (N) is zero?

Calculate the enthalpy change for the following reaction: 2CH4(g) + 3O2(g) → 2CO(g) + 4H2O(l) ∆H = ? Given the following reactions and their ∆H values: CH4(g) + 2O2(g) → CO2(g) + 2H2O(l) ∆H = -890.0 kJ 2CO(g) + O2(g) → 2CO2(g) ∆H = -566.0 kJ

Classify the following process as endothermic or exothermic and give the sign of ∆H.

Predict whether the following compounds are soluble or insoluble in water. a) Pb(NO3)2  – b) AgI – c) NH4Cl –

Given the following Lewis structures for cyanate ion: 1. What is the formal charge of each atom in structure A? a) Formal charge of O b) Formal charge of C c) Formal charge of N 2. What is the formal charge of each atom in structure B? a) Formal charge of O b) Formal charge of C c) Formal charge of N 3. What is the formal charge of each atom in structure C? a) Formal charge of O b) Formal charge of C c) Formal charge of N 4. Based on the formal charges determine which Lewis structure (A. B, or C) is more favorable?

What is the final volume of a sample of gas initially occupying 3.75 L at 5.0oC and 1.40 atm pressure after its pressure is increased to 5.25 atm and its temperature is increased to 57.0oC?

Select the nonpolar molecule.