Why are valence electrons important?

What is the name of the binary compound that has the formula CaO? A. calcium oxide B. calcium oxalate C. calcium peroxide D. calcium peroxalate

Rewrite each equation below with the delta h value included with either the reactants or he products, and identify the reaction as endothermic or exothermic

The equation to calculate density is D = m/v. For a liquid substance, which item increases as heatis applied? density O mass O volume Odensity and volume

Which of the following is a product formed when BaO and H2O react together? BaO H2 O2 Ba (OH) 2

the reaction Br2 (l) - >Br2 (g) has a deltaH=30.91 kJ and a deltaS=.0933 kJ/K. at what temperature does this reaction become spontaneous? Below this temperature, is the forward reaction or the backward reaction favored?

A good way for someone to identify similar substances is to measure their densities true or false

At 25 ∘c, kp = 25 for the reaction h2 (g) + i2 (g) ⇌2hi (g). at equilibrium, the partial pressure of both h2 and i2 is 0.296 atm. what is the partial pressure of hi at equilibrium?

In a resonant hybrid of a molecule like CH3CO2-, how are the electron orbitals of the carbon in CO2 sp hybridized?

Consider the formation of nitrogen dioxide and oxygen: NO (g) + O3 (g) ⇌NO2 (g) + O2 (g) The reaction is first order in O3 and second order overall.

Iron has a density of 7.86 g/cm3. calculate the volume (in dl) of a piece of iron having a mass of 4.15 kg.