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What mass of cesium bromide must be added to .500 L of water (d=1.00g/mL) to produce a 0.144 m solution?
What are the mole fraction and the mass percent of CsBr?
5.00 moles of ammonia are introduced into a 5.00L reactor vessel in which it partially dissociates at high temperatures. 2NH3(g)?3H2(g)+N2(g). At equilibrium at a particular temperature,
ethoxypropan-2-ol can be made by the ring opening of an epoxide when sodium ethoxide in ethanol-water is used. A) Draw the skeletal structure of (R)-1-ethoxypropan-2-ol.
Which of the following is a neutralization reaction?
Which reaction intermediate is formed when 4-methylcyclohexene reacts with Br2 dissolved in CCl4?
Identify the charged groups in the peptide shown below at pH=1 and at pH=7. What is the net charge of this peptide at these two pH values? val-met-ser-Ile-phe-arg-cys-tyr-leu
Find the temp (in K) above which a reaction with a delta H of 123.0 kj/mol and a delta S of 90.0 J/k*mol becomes spontaneous.
solution of potassium sulfate. Assuming that all ionic species are completely dissociated, what is the osmotic pressure of the mixture in torr?
The solubility of a gas in water is 0.22 g/L at 20 kPa of pressure. What is the solubility when the pressure is increased to 115 kPa
We find that 61.1 mL of an HCl solutionreacts exactly with 74.2 mL of 1.371 M KOH solution. Calculate the molarity of the HCl solution.
What is the molarity of ZnCl2 that forms when 30.0 of zinc completely reacts with CuCl2 according to the following reaction? Assume a final volume of 285 mL .
A 100 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution before the addition of any KOH. The Ka of HF is 3.5 * 10^-4
A compound of formula C6H10O2 shows only two absorptions in the 1H NMR spectrum: a singlet at 2.67 ppm and a singlet at 2.15 ppm. These absorptions have areas in the ratio 2:3. The IR spectrum shows a strong absorption at 1708 cm-1. Propose a stru..
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