Synthesis of crystalline materials is greatly facilitated if the reaction mixture is homogeneous on an atomic scale. Describe some (at least three) of the routes that could be used to synthesise a sample of BaTiO3 powder and compare the advantages/disadvantages of each. Describe the strategies that can be adopted to synthesise thin films of semiconductor materials such as CdS or GaAs.

What are self-assembled monolayers and how are they characterized?

What are self-assembled monolayers and how are they characterized?

What are NHCs and how do they differ from "normal" carbenes?(NHCs is N-heterocyclic carbenes)

For a particular redox reaction NO is oxidized to NO3

How does NMR allow us to understand the connection between bond rotation and the kinetic energy within the sample being analyzed?

At 1 atm, how much energy is required to heat 37.0 g of H2O(s) at –10.0 °C to H2O(g) at 169.0 °C? Helpful constants can be found here.

If your favorite silver jewelry ever tarnishes and you happen to have some aluminum foil on hand, you can actually get rid of some of that tarnish. The tarnish here is actually silver sulfide. If you put the jewelry and aluminum into a dish with enough water to cover them both, the following reaction will occur: 3Ag₂S + 2Al --> 6Ag + Al₂S₃. If you have a total of 5.0 g of Al foil accessible to you, how many grams of Ag₂S (thus, loosely speaking, how much jewelry) could you theoretically "clean"? You must show all work clearly and in detail to receive credit. All numbers immediately following elemental symbols should be understood as subscripts. (NOTE: If you try this at home, you may want to dissolve some baking soda in your solution to help neutralize the smell, because some of the sulfur here will escape as a gaseous product and not smell very pleasant!)

A buffer solution is prepared by mixing 20.0 mL 0.45 M HAc (acetic acid) with 35.0 mL 0.45 MNaAc (sodium acetate) (a) What is the amount of 4.0 M HAc which must be added to this buffer solution to double [H3O+]? (b) What is the amount of 2.0 M HCl that must be added to decrease the pH by 0.50? (c) How much NaOH(s) in g has to be added to the solution to raise the pH by 2.00?

I made a solution of fluorscein and diluted it with ethanol, and I was confused about some stuff.

Does emission and excitation depend on concentration?

Would would change if I diluted it with water rather than ethanol?

What is stoke's shift and what is an anti - stoke?

The following compounds can be formed during the Maillard reaction. For each compound:

Explain anaplerortic reactions and describe the principal such reaction for the CAC and the regulation of its activity in animals

at 25 C, a 0.010mol/L ammonia solution is 4.3 percent ionized. Calculate the pH

Suggest some possibilities as to why your buffer pH might not be exactly 8.0

4. If you expect the unknown acid molarities to be between 0.010 M and 0.20 M and the sodium hydroxide solution to be 0.050 M, what volume of unknown acid solution would you place into the flask? State your reasoning or assumptions that you make (perhaps typical of those given in question 3, perhaps not) and show your calculation.

Bonus. State two possible errors when using burets that would reduce the accuracy of your titration. Explain specifically whether the result would be a calculated acid molarity that is smaller than the actual value or a calculated acid molarity that is larger than the actual value.