1. Put a circle around the Lewis Acids and a Box around the Lewis Bases:

Ca²⁺                 S^2-               OH^-                      Fe³⁺                      I^-

Consider the following reaction:
CO(g)+H2O(g)⇌CO2(g)+H2(g)
Kp=0.0611 at 2000 K
A reaction mixture initially contains a CO partial pressure of 1346 torr and a H2O partial pressure of 1762 torr at 2000 K.

A.) Calculate the equilibrium partial pressure of CO2.

B.) Calculate the equilibrium partial pressure of H2

With respect to proteomics and Mass Spec, what is Data Dependent Acquisition and how does it affects dynamic range of proteome measurements?

The Ka of a monoprotic weak acid is 2.50 × 10-3. What is the percent ionization of a 0.176 M solution of this acid?

A compound with the formula XOCl3 is synthesized, isolated and purified.

When 3.270 g of this compound are decomposed chemically, a solution of chloride ions is produced.

The chloride ions are precipitated with silver ions and 9.170 g of silver chloride, AgCL, are produced.

What are the identity and molar mass of the element X?

This is likely on my final and my professor did not explain how to solve in class, he just laid it out there and 96% of the class failed the question. Thank you for any help!

sodium hydroxide dissolves very easily, and exothermically, in water. Using values from the appendix in your text, calculate the Ksp for this salt, as well as the temperature at which this reaction becomes spontaneous. Does the temperature need to be above or below this value in order for the process to proceed without outside intervention? Na0H(s): -379.4 kJ/mol

Apply 1D infinite ?(?) PiB model to the π-network in butadiene (assume that the molecule is linear and use the values 135 and 154 pm for lengths of C=C and C–C bonds).
a) Calculate the wavelength of the radiation that will be absorbed in promoting an electron from HOMO to LUMO in this molecule. Compare this to the experimental value of 217 nm.
b) What does the comparison made suggest to you about estimating the length of the π-network by adding bond lengths for this molecule?

Indicate the concentration of each ion present in the solution formed by mixing the following. (Assume that the volumes are additive.)

(a) 60 mL of 0.100 M HCl and 10.0 mL of 0.480 M HCl

H⁺
M

Cl ^-
M


(b) 15.0 mL of 0.316 M Na₂SO₄ and 10.4 mL of 0.200 M KCl

Na⁺
M

K⁺
M

SO₄^2-
M

Cl ^-
M


(c) 3.50 g of NaCl in 54.4 mL of 0.590 M CaCl₂ solution
Na⁺
M

Ca²⁺
M

Cl ^-
M

Consider the following balanced equation for the combustion of butane, a fuel often used in lighters:

2C4H10(g)+13O2(g)→8CO2(g)+10H2O(g)2C4H10(g)+13O2(g)→8CO2(g)+10H2O(g)

Complete the following table, showing the appropriate masses of reactants and products. If the mass of a reactant is provided, fill in the mass of other reactants required to completely react with the given mass, as well as the mass of each product formed. If the mass of a product is provided, fill in the required masses of each reactant to make that amount of product, as well as the mass of the other product that is formed.

What are the surface functional groups on the stationary phase in normal phase LC and reverse phase LC. Write out the eluotropic series for both normal phase LC and reverse phase LC using the common solvents we discussed in class (acetonitrile, MeOH, diethylether, H₂O, pentane, toluene).  Why acetonitrile is a stronger eluting solvent than toluene in normal phase LC?

The solubilities of the following salts are at a certain temperature. Ag₂SO₄ 0.03m, PbF₂ 1.0x10^-3m, and BaC₂O₄ 10^-4m. Calculate the concentrations of all ions present in each solution. Identify v, v_{_}, and v₊. Find m+/- for each solution.

1. When 15.0 mL of a 9.06×10^-4M sodium phosphate solution is combined with 15.0 mL of a 4.38×10^-4M chromium(III) nitrate solution does a precipitate form?  (yes or no)

For these conditions the Reaction Quotient, Q, is equal to

2. When 18.0 mL of a 5.83×10^-4 M manganese(II) bromide solution is combined with 12.0 mL of a 2.53×10^-4 M ammonium carbonate solution does a precipitate form?  (yes or no)

For these conditions the Reaction Quotient, Q, is equal to .

what are cofactors that are required by enzymes