Classify the following ionic compounds according to the Sigma-Aldrich solubility scale based on their molar solubility (S).

Answer choices are: Very Soluble, Freely Soluble, Soluble, Sparingly Soluble, Slightly Soluble, Very Slightly Soluble, and Practically Insoluble.

a) Silver nitrite (AgNO2), S = 0.27 M. Answer is

b) Lithium Phosphate (Li3PO4), S = 3.4 x 10-3 M. Answer is

c) Aluminum Fluoride (AlF3), S = 8.6 x 10-2 M. Answer is

d) Tin (II) Iodide (SnI2), S = 2.9 x 10-2 M. Answer is

what is the chemical equation for the formation of eugenol from DCM and anyhydrous sodium sulfate?

Two isomeric compounds, A and B, are known to each have a monosubstituted benzene ring (C6H5). Both have the formula C6H5C3H5O2 and both are insoluble in water. However, when they are treated with an aqueous solution of sodium carbonate, A dissolves, but B does not. Give structures for both A and B consistent with this information. Explain your reasoning. Is the information provided sufficient to uniquely define the structures of A and B? If not, what other experimental data would be useful to further limit the structural possibilities? I really need to understand this really soon please answer as soon as possible.

A titration is performed by adding .435M KOH to 80ml of .205M HC3H5O2.

A) Calculate the pH before the addition of any KOH?

B) Calculate the pH after the addition of 7.54ml of KOH?

C) Calculate the volume of base needed to reach the equivalence point?

D) Enter the pH of the solution at the equivalence point of the titration?

What are the forms / pools of K in the soil? Which two pools constitute the available K to the plant in a growing season? Discuss briefly the relationship between these two pools.

For the last step in your potential Nobel-prize winning cancer cure drug you need 3-cyclopentyl-1-phenylhexan-3-ol, but no chemical company sells this particular alcohol. You, being the wonderful synthetic chemist that you are, figure you can make this tertiary alcohol from the simple Grignard reagent reaction you learned in your CH223 course.

A) Draw the structure of your target alcohol. Use the name to make sure you have the correct number of carbons:

B) If the Grignard reagent contains the aromatic ring, draw both the appropriate Grignard reagent and carbonyl compound (not an ester) you would need to make your target molecule. Input the Grignard reagent first, then click the "New" tool to allow the carbonyl compound input.

C) If the Grignard reagent contains the five-membered ring, draw both the appropriate Grignard reagent and carbonyl compound (not an ester) you would need to make your target molecule. Input the Grignard reagent first, then click the "New" tool to allow the carbonyl compound input.


D) There is one more combination that you could use to arrive at the targent alcohol. Input the Grignard reagent first, then click the "New" tool to allow the carbonyl compound (not an ester) input of this last possible synthetic scheme.

For the following reaction show all work:

1. Give the oxidation number for each element in the following equation.

Fe2O3 (s) + CO (g) = Fe (s) + CO2 (g)

a. Write the balanced oxidation half reaction.

b. Write the balanced reduction half reaction.

c. What is the oxidizing agent?

d. What is the reducing agent?

e. What is the net ionic equation?

True/ False

A. _____The emf of a voltaic cell can change with temperature.

B. _____A reaction with a negative value of S and a positive value of H at a given temperature is not spontaneous at that temperature.

C. _____The change in entropy is positive when a piece of table sugar dissolves in water.

D. _____A ligand is always a Lewis base.

E. _____A hydrogen fuel cell requires oxygen to operate.

F. _____When the temperature of a ferromagnetic material is raised to a high enough level, it becomes diamagnetic.

G. _____The solubility of barium hydroxide is higher in pure water than it is in 1.0M hydrochloric acid.

H. _____In any reversible process, the entropy remains constant.

I. _____If two molecules are isomers of each other, they always have the same chemical formula.

J. _____A square planar molecule can never be chiral.

K. _____The entropy of an element in its standard state is zero.

L. _____At equilibrium, the change in free energy for a given reaction is zero.

An equilibrium mixture of N2, H2 and NH3 at 700K contains 0.036M H2 and 0.015M H2. At this temperature, Kc for the reation N2(g)+3H2(g) <> 2NH3(g) is 0.29. What is the concentration of NH3?

A25.0 mL sample of 0.100 M NaOH is titrated with a 0.100 M HNO3 solution. Calculate the pH after the addition of 0.0, 4.0, 8.0, 12.5, 20.0, 24.0, 24.5, 24.9, 25.0, 25.1, 26.0, 28.0, and 30.0 of the HNO3.

Compare and contrast SDS-PAGE and Native-PAGE. Discuss the chemical and mechanistic similarities and differences between the two. Discuss why a scientist would prefer one method over the other.

please match nitrogen from the phrase that best describes it:

_Most abundant form of nitrogen

_disrupts 03-o2 equilibrium and is a greenhouse gas

_most oxidized form of nitrogen

1. NO

2. N2

3. N2O

4.NO3

5.HNO2

Indicate whether the following statements are correct or incorrect, and justify your answer:

a)The presence of more dislocations increases the yield strength of an annealed metal.

b)Dislocation move more readily in a solid solution alloy than in a pure metal.

c)A fine-grained alloy will have a higher yield strength than a corse-grained

alloy of the same chemical composition.

Consider the following reaction at equilibrium.

2H2O (g) + 2SO2 (g) <--> 2H2S (g) + 3O2 (g)

What effect will adding more H2S have on the system?

A) The reaction will shift in the direction of reactants

B) The equilibrium constant will increase

C) The reaction will shift in the direction of products

D) The equilibrium constant will decrease

E) No change will be observed

Can you explain why the one that is the right answer correct and along with also explaining why the others are wrong?

Compare and contrast Oxidative Phosphorylation and Photophosphorylation. Write out at least 5 similaritites, differences, or some combinaion of the 2.