Homework Help for Chemistry

Aqueous solutions of caffeine, C8H10O2N4

Molality:

Mass Percent Solvent:

Ppm solute:

Mole fraction solvent: 0.900

When N2O5(g)N2O5(g) is heated it dissociates into N2O3(g)N2O3(g) and O2(g)O2(g) according to the following reaction: N2O5(g)⇌N2O3(g)+O2(g)Kc=7.75N2O5(g)⇌N2O3(g)+O2(g)Kc=7.75 at a given temperature. The N2O3(g)N2O3(g) dissociates to give N2O(g)N2O(g) and O2(g)O2(g) according the following reaction: N2O3(g)⇌N2O(g)+O2(g)Kc=4.00N2O3(g)⇌N2O(g)+O2(g)Kc=4.00 at the same temperature. When 4.00 molmol of N2O5(g)N2O5(g) is heated in a 1.00-LL reaction vessel to this temperature, the concentration of O2(g)O2(g) at equilibrium is 4.50 mol/Lmol/L. Find concentration of N2O5, O2, and N2O.

Attempt structure of compound with the following spectra and molecular formula of C11H14O.

Identify the likely electrophilic and nucleophilic sites in each of the following molecules:

Explain, on the molecular level, how Tin (II) chloride, SnCl2, dissolves in water?

Calculate the volume in liters of 4.86x 10 ^−4 M copper(II) fluoride solution that contains 25.0g of copper(II) fluoride CuF2. Round your answer to 3 significant digits.

Consider the following ideal geometries for MXn molecules (n=3-6) and the distortions described for each. What are the point groups of the ideal geometry and the distorted geometry? a. MX6 octahedral distorted by elongating two trans-related bonds. b. MX6 octahedral distorted by slightly closing the 90 angles between the three M-X bonds in both sets of cis-related positions.