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a 15.0 mg strip of magnesium reacts in 3.0 mL of 5.0 M HCl over a given period of time. Evaluate the mol mg/mol HCl ratio for the reaction.
Calculate the pH of of a solution prepared by mixing 60.0 mL of 0.160 M HCl with 15.0 mL of water. How much antacid containing 400.0 mg of Mg(OH)2 in 5 mL of water is needed
write the corresponding hemicl reaction for the equilibrium between solid Ca3(PO4)2 and the Aq ions. what is the solubility of calcium phosphate
Calculate the heat given off when 177 g of copper cools from 155.0 Celsius to 23.0 Celsius. The specific heat capacity of copper is .385 J/g C
For the reaction A + B C, the rate constant at 215 degrees C is 5.0 X 10^-3 and the rate constant at 452 degrees C is 1.2 X 10^-1 a) What is the activation energy in kJ/mol?
36.0% sodium chloride or table salt, and the rest being sodium bicarbonate or baking soda, How many grams of baking soda are present in the sample?
In a gas mixture, the partial pressures are nitrogen 435 , oxygen 145 , and helium 240 . What is the total pressure ( torr) exerted by the gas mixture?
A solution contains 0.22 M CaCl2 and 0.12 M MgCl2. What concentration of hydroxide ions would be required to separate the magnesium as Mg(OH)2 without precipitating the calcium as Ca(OH)2?
Consider H2, D2, and H2O, treated as ideal gases as pressures of 1 atm and temperatures of 293.2 K.
cannot be dehydrated to an alkene without rearrangement. What is the chief product of dehydration?
Using pH-based arguments only, why do scientists use phosphate-based bufers instead of buffers made using acetic acid
the two complimentary single strands of DNA shown below can form (at least) three secondary structures upon annealing. Name three of them.
What are 3 most significant structural differences between HPLC equipment and Ion Chromatography instruments
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