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A 50 ml volume of HCl solution and 0.5 M concentration was added to a sample of 5.5 g of magnesia milk. This solution was titrated with 0.25 M NaOH. If 39.6 ml of NaOH were required to reach the endpoint, find the mass content of Mg(OH)2 in the magnesia milk.
Which of the following compounds is a positive effector of the allosteric enzymes isocitrate dehydrogenase
it was determined in a calorimetry experiment that a piece of copper metal of 92.0 gram released 1860 joules of heat to
What is the theoretical yield of solid copper that should form when 18.1 g of ammonia is reacted with 90.4 g of copper(II) oxide? If only 45.3 g of copper is actually collected, what is the percent yield?
You are asked to prepare a buffer with a pH of 4.04. calculate the volumes of 1.00M solutions of formic acid (HCOOH) and sodium formate (NaHCOO) needed to produce 200mL of the buffer
a 260- flask contains pure helium at a pressure of 743 . a second flask with a volume of 470 contains pure argon at a
a sample of hydrogen gas was collected over water at 36degc and 855 mm hg. the volume of the container was 6.50 l.
We titrated a 0.1033 M NaOH solution into an unknown concentration of a weak acid (25.00 mL). It also says the unknown acid will have a concentration of about 0.1 M.
A canister is filled with 320 g of ice and 100 gm of liquid water, both at 0 C . The canister is placed in an oven until all the H_2O has boiled off and the canister is empty.
Explain what is the mole fraction of methane in the mixture. Assume that the water produced by the combustion is in the gaseous state.
mineral pyrolusite mno2 manganese oxide is a compound of manganese-55 and oxygen-16. determine the empirical formula of
27 years of age Man, Type 1 diabetes, Ketoacidosis, Why is serum K normal even though there is polyuria and glycosuria? What would be the treatment objective
Calculate the pH of the solution formed by the addition of 55.5 mL of 0.100 M NaOH to 49.2 mL of 0.100 M H3PO4.
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