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After one year he sold all shares at $ 20.25 per share. He paid the commission of 4% on sale Price. He received the dividend of $1.50 Per share. Determine Percent return on the investment?
A 10 m Laliquot of a hydrochloric acid solution was titrated with 0.04029M NaOH. The following titration data were collected. The neutralization required 25.99 mL of the basic solution.
One milligram of streptomycin sulfate has antibiotic activity of 650 mg of streptomycin base. Find how many grams of streptomycin sulfate would be equivalent of 1 g of streptomycin base?
Jessica is new owner of Coffee Roasters. Their best sellers are "best blend" & "economy blend" coffee. Prepare the problem as the linear program (decision variables, objective function, constraint
A 0.200 g sample of hemoglobin is dissolved in the water to provide10.0 mL of solution, which has an osmotic pressure of 5.5 torr at 25 oC. Hemoglobin contains 0.33% Fe by mass.
Calculate the entropy change associated with the isothermal compression of 6.64 mol of ideal gas atoms from the 5.81 atm to 14.75 atm?
Calculate the number of kilowatt-hours of electricity to form the 1.00 kg of Mg from electrolysis of molten MgCl2 if the applied emf is 5.00 V. Assume that the process is 100% efficient.
Polly woodsides is preparing to invest the savings of $100,000 into 3 stocks. Prepare the Linear Program to maximize total return on Polly's investment.
The first half-cell has [Zn2+] = 1.35 M, and the second half-cell has [Zn2+] = 3.75 x 10-4 M. A concentration cell is constructed with two Zn(s)- Zn 2+(aq) half-cells.
Determine the pH of the solution in the cathode compartment of the cell pictured when PH2 = 1.0 atm,[Zn2+] in the anode compartment is 0.10 M, and cell emf is 0.542 V
Obtain the integrated rate equation for a reversible reaction of stoichiometry. The reaction is first order from left to right and second order from right to left. At t=0, [A]=[A]0,[Y]=[Z]=0.
Discuss in sufficient detail how a buffer resists changes to pH when a small amount if an acid or base is added to a buffer solution. A solution consisting of a weak acid and the salt of its conjuga
Pure water is entering tank at the rate of 3 gal/min, and mixture is leaving at the rate of 2 gal/min. How much salt is in tank when it begins to overflow?
Phosphoric and Carbonic acid are the main acids used to buffer the blood to a pH of 7.4. Plot a fractional composition graph (hand written is fine or computer generated) of both acids pointing out w
Determine the procedure needed for this standardization? An acidic solution has already been made; one needs to standardize it to determine its "known" concentration.
Consider a mixture of two gases, A and B, confined to a closed vessel. A quantity of a third gas, C, is added to the same vessel at the same temperature.
If student buys the $1000 IRA when he is 25 years old and expects to earn the average of 4% per year compounded annually over 35 years (until he is 60), how much accumulate in investment?
The atomic mass of born is10.81 amu. Boron obtained from the borax deposits in Death Valley consists of 2 isotopes. They are boron-10, boron-11 with atomic masses of10.013 amu and 11.009 amu, respec
Calculate how many significant figures should be used to express the mass of anyone using the scale whose mass is between 10 and 99kg. A bathroom-type scale is calibrated in the tenths of a kilogra
One is filled with Hydrogen gas, the other with Oxygen, each at the same pressure. Both containers are heated above 100 degrees C until the pressure in each is 1.60 atm.
Calculate the pH and concentrations of K+, H+, OH-, H2PO4-, PO43- , HPO42- from a1.00L solution which is having .0250 mol KH2PO4 and 0.030 mol KOH.
Explain what volume of is required to neutralize the NaOH solution? Calculate the ph of the acid/base solution when the following volumes of HNO3 have been added.
Calculate the ph for this reaction when half the amount of titration requires red to reach the equivalent point has been added.
Pure water is pumped into tank with rate of 2 gal/min, and when solution is well stirred, it is pumped out. Write the differential equation for amount of salt A(t) in tank at t > 0.
If sodium iodide is added to the reaction mixture, the rate of methanol formation is dramatically increased (i.e. sodium iodide is a catalyst). Reaction of bromo methane with sodium hydroxide in wat