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The freezing point of ethanol (C2H5OH) is -114.6 degrees C and the molal freezing point depression constant for ethanol is 2.00 degrees C kg mol-1. What is the freezing point (in C) of a solution prepared by dissolving 57 g of glycerin (C3H8O3) in 214 g of ethanol.
Determine the molarity of a saturated aqueous solution of NaI formed as 25degree celsius assuming that the added NaI does not add significantly to the volume of the water?
You are given 2.56 g of salicylic acid. Using the procedure in the lab manual for the synthesis of aspirin, you recover 0.89 of aspirin. Calculate your percent yield of aspirin
A student dehydrated 10.0 g of 2-methyl-2-butanol with %50 sulfuric acid and obtained 6.50 g of products. Calculate the theoretical yield and the percent yield.
Arrange the following elements in order of increasing ionization energy, and explain how you know the order
How many milliliters of .02 M HCl are used to completely neutralize 20.0mL of .01 M NaOH solution?
A solution contains 0.635g NaOH in 236 ml solution. What is the [OH-]?
Draw the crystal-field energy level diagram for the 3d obitals and show the placement of d electrons assuming this is a weak-field complex ion.
calculate the ph that results when 100 mL a liquot of 0.0500 M is added to 400 M of a NH3/NH4+ buffer that is 0.200 M in NH3 and 0.300 M in NH4Cl
What percentage error would be introduced in a 35.0 mL sample of liquid if the air bubble comes out of the tip of the buret while the liquid sample is being transferred?
What is the pH of a solution prepared by mixing 25.00 mL of a 0.10 M solution of the weak acid CH3CO2H with 25.00 mL of 0.040 M sodium acetate, CH3CO2Na? Assume that the volume of the solutions are additive and that Ka = 1.8 ?* 10-5 for CH3CO2H.
Given that the density of the gas mixture =0.312 g/L at the pressure of 0.2 atm and temperature 500 Kelvin At equilibrium. Determine the value of Kc also express your answer in units of (mol/L)?
Determine which girl has the solutions at the concentrations desired and Girl A dilutes 10 mL stock solution to a final volume of 20 mL. Girl B dilutes 10 mL stock solution to a final volume of 40 mL.
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