do the equilibruim concentration of the reactants and the products depend on their initial concentration?

Oxy-myoglobin was measured at wavelength of 417 nm with molar absorptivity of 12,800 M^-1cm^-1. Met-myoglobin was measured at wavelength of 409 nm with molar absorptivity of 17,900 M^-1cm^-1. In 10.0 g of meat (3.0 mL of total solution) the absorbance of oxy-myoglobin was 0.769 using a 1 cm cell and the met-myoglobin was 0.346. Find the moles of oxy-myoglobin and the met-myoglobin per gram of meat.

Determine the number of possible electron arrangements given the following term:

⁴D

please show how you determined the answer

Calculate the pH change that results when 11 mL of 5.8 M NaOH is added to 776 mL of each the following solutions. (See the appendix.)

pKa = 9.25

Ka = 5.6e-10

(c) 0.10 M NH₃

Titanium (Ti) is a strong, lightweight metal that is used in the construction of rockets, jet engines, and bicycles. it can be prepard by reacting TiCl4 with Mg metal at very high temperatures. The products are Ti(s) and MgCl2.

a) provide a balanced chemical reaction for the reaction described above.

b) how many grams of Ti metal can be produced from a reaction involving 3.54 * 10^4 g of TiCl4 and 6.53*10^3 g of Mg?

Consider the reaction of iron (III) sulfate (aq) and sodium phosphate (aq) to form iron (III) phosphate (s) and sodium sulfate (aq).

c. If 2.16 g of iron (III) phosphate are obtained when a student performed this reaction, what is the percent yield?

d. Is the answer from part C reasonable? Assuming no calculation errors were made, give a possible explanation for the answer in part C.

e. If you perform this reaction with 20.00 mL of the 0.250 M solution of iron (III) sulfate and obtain a 65.0% yield, how many grams of iron (III) phosphate will you make?

Suppose you add a solution of calcium hydroxide to a solution of sodium carbonate and a precipitate forms. You measure the total amount of the precipitate (in g) as a function of time. At time 0, 20.0 s, 40.0 s and 60.0 s you get a cumulative weight of 0.00 g, 4.82 g, 6.33 g and 8.49 g of the precipitate, respectively. What is the average rate of reaction between 40 and 60 seconds in mol/s? Enter a numerical value below without any units or symbols. If you use scientific notation, then be sure to format it using the "E" notation like "1.0E-5" and do not put spaces between the "E" and the numbers.

A compound containing 3 mCi of Sulfur-35 (half-life = 87 days)is stored in a laboratory. How much radioactivity will there be after 348 days?

1.

0.1875 mCi

2.

0.75 mCi

3.

0.375 mCi

4.

0.1875 mCi

5.

0.094 mCi

Calculate the concentrations of all species in a 1.38 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8.

These are the following concentrations that I need to find.

[Na+]

[SO3^2-]

[HSO3-]

[H2SO3]

[OH-]

[H+]

Please show me how to solve this problem. Anything help is greatly appreciated. Thank you.

How were the nanoparticles multiplexed?

Zinc, Zn, adn iodine, I2, react to form zinc(II) iodide, ZnI2 ( the reactants and the product are all solids at room temperature).

a. write a balanced chemical reaction for this process.

b. suppose that 50.0 g of zinc and 50.0 g of iodine are used to form zinc(II) iodide.

1. assuming that the reaction goes to completion, which element will be totally consumed in the formation of the zinc(II) iodide?

2. what is the limiting reagent?

3. how many grams of zing(II) iodide can be produced?

4. how many grams of the excess element remain unreacted?

1. What happens to the working electrode when the electrolyte concentration is changed?

2. Explain absorption emission through the Jablonski Diagram.

At 1 atm, how much energy is required to heat 91.0 g of H2O (s) at-16.0 degrees C to H2O (g) at 141 degrees celsius?

1) When 10ug of an enzyme (MW 50,000) is added to a reaction mixture containing its substrate at a concentration one hundred times the Km, it catalyzes the conversion of 75umol of substrate into product in 3 min. What is the enzyme's turnover number?

2) You want to load 15g of protein in 10L into one of the 12% polyacrylamide gel well. The protein needs to be in 1X buffer and in a total volume of 0.100 ml. You are given a 4.5 mg/ml protein solution, a 20X sample buffer, and distilled water. How much of each would you mix together to make required volume?

3) The Km of an enzyme of an enzyme-catalyzed reaction is 6.5uM. What substrate concentration will be required to obtain 45% of Vmax for this enzyme?

A protein assay requires the reaction of the protein solution with a protein-binding dye for one minute, followed by measuring the absorbance of the protein-dye complex at 505 nm. The absorbance data for four standard protein solutions and the blank is provided in the table below. The absorbance of each solution was measured three times. Construct a calibration curve using the data in the table, and find the slope (m), intercept (b), and their respective standard deviations using the method of least squares. Note that the calibration curve will be created from absorbance values corrected for the absorbance of the blank and not the raw data in the table (including individual blank values). When creating the calibration curve, do not use the average absorbance at each protein concentration. Instead, use each data point separately, meaning there will be three data points at each protein concentration, for a total of 15 points (including each individual blank value).

m= 1.012 +/- ?

b= ? +/- ?

Calculate the concentration and uncertainity of a protein solution that produced an averge absorption of 0.470 when measured three times.

number = ? +/- ?