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Determine the percent yield of barium sulfate obtained (4.9852g) when 100.0 mL of a 0.2516M aqueous barium chloride is treated with an excess of sulfuric acid? Hydrochloric acid is a by-product.
A particular enzyme catalyzed reaction was followed and data collected as indicated below. Using the data, determine the Michaelis constant and the maximum velocity of the reaction.
The molar heat capacity of silver is 25.35 . How much energy would it take to raise the temperature of 8.80 of silver by 10.2
Do to friction with the Earth's atmosphere a large static electric charge could build up on our plummeting asteroid fragment. Would you expect our fragment to generate a magnetic field. Explain why or why not.
Explain why must the reaction of both the pure copper as well as the brass sample with nitric acid be done in the hood
Calculate the overall energy change in kilojoules per mole for the formation of CaCL(s) from the elements. The following data are needed: (a) Eea for CL(g) = -348.6kj/mol. (b) Ei1 for Ca(g) = +589.8kj/mol. (c) Ei2 for Ca(g) = +1145kj/mol.
Two students are debating whether methanol, CH3OH(l), or propanol, C3H7OH(l), is the better fuel. One student states that methanol produces more heat than an equal mass of propanol.
a patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. the drug is supplied
determine the melting point of an aqueous solution containing 147mg of saccharin c7h5o3ns added to 1.00ml of water
The pKa of hydrogen cyanide is 9.21. In a 100mL solution there are 0.30M of hydrogen cyanide and 0.50M sodium cyanide, there is 0.0050 moles of solid sodium cyanide without changing the volume. Find the resulting pH of the solution.
An evaluation of R was performed, following the procedure. The barometric pressure was 736torr, the temperature was 295K, and the volume of hydrogen gas collected was 35.6mL. The calculated value of R was 82.1 atm K-1 mol-1. How many grams of magn..
describe one or more simple chemical tests that would distinuish acetaminophen from ibuprofem
Calculate the amount of heat liberated (in kJ) from 437 g of mercury when it cools from 61.0°C to 12.0°C.
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