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Describe how you would prepare a 10-mL sample of a standard solution that is a 4/5 dilution of the stock solution. Calculate the concentration of Cu2+ ion in this standard solution if the stock solution was 0.0200 M Cu2+.
water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas. What is the balanced Equation?
An empty vial has a mass of 67.77 g. If the vial has a mass of 244.56 g when completely filled with liquid carbon terachloride (d = 1.59 g/cm3), what is the volume of the vial?
Calculate the osmotic pressure of a 20% sucrose solution given that the molecular weight of sucrose is 342g.
Draw the major product for each of the following reactions. Make sure that you draw a major product that could be isolated, not just an intermediate or something that would be present only in low equilibrium population.
Calculate the heat that must be supplied to 10.8 g of Ne at .15 atm to raise its temperature from 28C to 51C at constant pressure. Assume that neon behaves as an ideal gas.
how many moles of excess reactant are present when 2.90*10^2 ml of .182 M sulfuric acid reacts with .423 L of .170 M sodium hydroxide to form water and aqueous sodium sulfate?
How many grams of cholesterol does a person with a blood volume of 4.60 L have circulating in his or her blood?
What mass of NaOH (s) must be added to 1.0 L of 0.050 M NH3 to ensure that the percent ionization of NH3 is no greater than 0.0010%? Assume no volume change on addition of NaOH. Kb NH3=1.8 x10^-5
If the sign for delta G is negative (spontaneous process) and the sign for delta S is positive (more disorder) for both dissolving processes, how could one be endothermic (positive delta H) and one be exothermic
A student dissolves 27.2 g of aniline, C6H7N in 120 mL of water. At what temperature will the solution freeze
calculate the volume of 19.4 M sulfuric acid that must be added to water to prepare
What volume of 3 M H2SO4 is needed to neutralize all of the disodium salicylate and the excess NaOH (2.17 mL excess) present after the initial reaction?
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