General Chemistry Answers

Another type is ____ of molecule is attracted to a partial ____ side of another molecule.nExt the _____ the hydrogen atom interacts with____ or nitrogen or ____atom to form polar bond.

The molecular geometry of CCl4 is tetrahedral. Is it a polar molecule? Support your answer

Decide whether the OF2 is polar molecule. The electronegativities of oxygen and fluorine,3.44 and 3.98 respectively. Support to your answer.

A solution is prepared with [V

3+

] = [Cr

2+

] = 0.0100 M. and [V

2+

] = [Cr

3+

] = 0.125 M The

following reaction occurs.

𝑉

3+(𝑎𝑞) + 𝐶𝑟

2+(𝑎𝑞) ⇆ 𝑉

2+(𝑎𝑞) + 𝐶𝑟

3+(𝑎𝑞) 𝐾𝑐 = 7.2𝑥102

What are the concentrations of the participating species when equilibrium is reached?

1.     Write the a) balanced molecular, b) complete ionic and c) net ionic equations for the following reaction.

Ca₃(PO₄)₂(aq) + H₃PO₄(aq) ⟶ Ca(H₂PO₄)₂(aq)

How many moles of sulfuric acid (H2SO4) would be present in 500 mL of a H2SO4 solution of concentration 0.2 mol.L–1 ? Density of 0.2M solution is 1,011 g.L-1

The equilibrium concentrations of in a gas mixture at a particular temperature are 0.13 mol. dm-3 H2, 0.70 mol. dm-3 I2, and 2.1 mol. dm-3 HI. What equilibrium concentrations are obtained when 0.200 mol of HI is injected into an empty 500 cm3 container?

One of the reactions used to inflate automobile air bags involves sodium azide 

(NaN3). The balanced equation will be: 2NaN3(s) → 2Na(s) + 3N2(g). Determine the mass of N2

produced from the decomposition of 100.0 g of NaN3.

The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a matchbox. This happens in the reaction

KClO3 + P4 = P4O10 + KCl

If there are 0.895 g of KClO3 and 0.995 of P4

a. Which is the limiting reactant

b. How much KCl is produced in the reaction?

the thermochemical equation for the incomplete combustion of carbon into carbon monoxide is represented as: 2C+O2(g) = 2CO(g)

Applying hess's law, compute for the ΔH of the reaction if overall process above can occur in two steps whose thermochemical equations are given below:

1. C(s)+O2(g) = CO2(g) ΔH°= -393.5 kJ
2. 2CO(g) +O2(g) = 2CO2(g) ΔH°= -566.0 kJ