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Question: Calculate the amount of Tris (hydroxlmethyl) aminomethane (Tris) necessary to make 100mL of a 0.100M Tris buffer that is equimolar in Tris-base(MW=121.1 g/mol) and Tris-HCl(MW=157.6g/mol).
Different manufacturers claim to have the best antacid. Which of the following tablets would neutralize the most acid for the money
A gas sample containing 1.65 mol at 25°C exerts a pressure of 413 torr. Some gas is added to the same container, and the temperature is increased to 50.°C.
Calculate the molarity of a solution made by adding 26.1 mL of concentrated hydrochloric acid (37.3 % by mass, density 1.19 g/mL) to some water in a volumetric flask,
Consider equimolar samples of the same ideal gas at the same temperature, but different volumes. Sample A has a larger volume than sample B. Compare the pressures. Compare the rms speeds. Compare the average kinetic energies.
Aluminum has a specific heat of 0.880 J/g-deg. How many joules are needed to heat 155g of Al from 20.0oC to 75.0oC
Sodium hydroxide is known to be hygroscopic and deliquescent: what do these terms mean? How does this property contribute to the hazards associated with handling this substance
For the decomposition of solid ammonium chloride into ammonia gas and hydrogen chloride gas Kp = 1.1 x 10-16. Calculate the change in standard free energy for this decomposition reaction.
a solution is prepared by adding 1.91 mg of an unknown protein to enough water to make a 12.7 ml solution. the osmotic
When D2 reacts with ethylene in the presence of a finely divided catalyst, ethane with two deuteriums, CH2D-CH2D, is formed. (Deuterium, D, is an isotope of hydrogen of mass 2.)
Arrange the following substances in order of increasing strength of the crystal forces: NaCL Ne MgO CO2 SO2 Please explain if possible
What weight of sulfuric acid will be needed to react completely 35.5g of ammonia in the production of ammonium sulfate.
assume two 200.0-l tanks are to be filled separately with gases helium and hydrogen. find mass of each gas is required
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