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A 1000 ml solution contains 5.55 g of CaCl2 and 4.77 g of MgCl2. a) How many milliliters of 0.02 N standard versenate solution would be required in the API titration for total hardness? b) Express the concentrations of Ca2+ and Mg2+ in parts per million
the forensic technician at a crime scene has just prepared a luminol stock solution by adding 11.0 of luminol to creating a solution with a total volume of 75.0 . What is the molarity of the stock solution of luminol?
its initial value in a first-order reaction, what is the rate constant for the reaction in the units min-1?
A voltaic cell utilizes the following reaction: 2Fe3+ + H2 --> 2Fe2+ + 2H+ what is the emf of this cell under standard conditions? what is the emf for this cell
Calculate the specific heat of a metallic element if 314 joules of heat energy are needed to raise the temperature of a 50.0 gram sample from 25 degrees celsius to 50 degrees celsius.
Compute the pH of a solution made by mixing eighty grams of NaCH3COO, to 39 grams of CH3COOH, and adding in H2O to produce 500. mL of solution.
what is the molarity of a solution that contains 36.0g of vitamin B1 hydrochloride (molar mass = 337g/mol) in 190mL of solution?
0.158g of a barium halide is completely precipitated out of H2SO4 and 0.124g of barium sulfate are produced. what is the true formula of the compound.
Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids
The density of benzene at 15C is 0.8787 g/mL. Calculate the mass of 0.1500 L of benzene at this temperature.
Calculate the maximum non-expansion work that can be done on the surroundings from the combustion per kilogram of H2(g) at constant pressure and 298.15K.
A balloon has a volume of 10,500 liters, and the temperature is 15C. If the temperature were -25C, what would the volume of the balloon be.
A microwave oven operating at 2.4 GHz has a power output of 650 W. A) What is the wavelength of the mocrowaves?
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