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The heat capacity of liquid water is 4.18 j/g C and the heat vaporization is 40.7 kj/mol. How many kilojoules of heat must be provided to convert 1.0 g of liquid water at 67 C into 1.00 g steam at 100 C?
A 50.0-mL sample of 0.300M propionic acid, HC3H5O2 (a weak acid), was titrated with 0.150 M NaOH. Ka for propionic acid is 1.3 x 10-5.
Using the scheme of analysis as a guide, give the formula for a chemical substance that will behave as indicated- Form a precipitate with KCI solution and also with CuCl2-
Barium chromate dissolved upon treatment with nitric acid forming an orange solution. Write a net ionic equation to represent the overall reaction that occurs.
If 20mL of .10M NaOH is added to 45mL of .20M HC2H3O2, what is the pH of the resulting solution at 25 degrees Celsius
If a system has 2.00 x 10^2 kcal of work done to it, and releases 5.00 x 10^2 kJ of heat into its surroundings, what is the change in internal energy of the system
What is the solubility of calcium phospate in pure water. Also what is the solubility of it in 0.3m Na3Po4.
Calculate the standard entropy change for the following reaction at 25 °C. Mg(OH)2(s) + 2HCL(g) --> MgCl2(s) + 2H20(g)
How many distinct tetrapeptides can be made from the three amino acids leucine, histidine, and valine
What would be the partial pressures of all the species if NO and Br2, both at an initial pressure of 0.30 atm, were allowed to come to equilibrium at this temperature
A piece of iron weighing 85.690 g was burned in air. the mass of the iron oxide produced was 118.350 g. What are the moles of iron in the original sample
Your stock solutions are 20% glucose, 1M tris and 0.5M EDTA. The diluent is distilled water. Determine how much of each you will add to make the desired buffer.
Provide a detailed, stepwise mechanism for the base- mediated transesterification of methyl benzoate with sodium ethoxide
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