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What mass of melamine will be obtained from 168 kg of urea if the yield of the overall reaction is 79.0%
What is the osmotic pressure of a solution made from dissolving 30.0 g of glucose, C6H12O6, in 700 mL of water at 21.0C
calculate the number of microstates, W, that have this energy. Make sketches of these microstates. Calculate the corresponding entropy for each state.
A 30.0 mL sample of 0.30M HClO (aq) is titrated with 0.20 M NaOH (aq). Ka of HClO is 3.5*10^-8. a. What volume of base is needed to reach the equlivance point. b. Determine the pH of the equlivance point.
What would the product/structure be if the reaction of methyl benzoate was a subsitution (add H and NO2 to it)?
Explain how would prepare 2.5 mL. of a solution with an equal pAg from 7.5 to AgNO3 and Ag2SO4. Remember that the pAg will serve to determine the concentration of Ag + in solution.
O CH3 CH3CH2CNHCHCH3 Name compound double bond from O and single bond from methyl group
What is the total pressure in mmHg of the mixture after it is placed in a container 1/2 the volume of the original container?
Use the Henderson-Hasselbalch equation to calculate the pH of a 250 mL solution of 0.3 M acetic acid (pKa = 4.76; assume it is initially fully protonated)
The reaction of calcium oxide with the pollutant, sulfur trioxide, to produce calcium sulfate has been proposed as one way to remove the the SO3 from the smoke resulting from burning high sulfur coal (as in a power plant).
calculate the heat of reaction for 2PbS +3O2 yields 2PbO +2SO2 given the following information. PbS= -93.3 kj/mol. PbO=-219.7. SO2=-296.6. O2 = 0. I got -846kj, is that correct
Some AgCl(s) has been placed in a beaker of water. After some time, the solubility of Ag+ and Cl- was measured to be 2.5 x 10-5 M. Determine whether the system has reached equilibrium.
If 29.1 mL of 0.4 M NaOH is used to reach the endpoint when titrating 20.1 mL of acetic acid, what is the concentration of the acetic acid in moles/L
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