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Problem- Propose a reason for why 2,4-DNP or semicarbazone derivates usually precipitate out of their ethanolic solutions.
Working it out this problem
calculate the final temperature of a mixture of 130.0 g of ice initially at -22.5 Celsius and 310.0 g of water initially at 80.5 Celsius.
Name the compounds MnCl2, SCl2, and CaBr2. Explain the use or omissions of the Roman numeral (II) and the prefix di-.
The silicon in the plate is a mixture of naturally occurring isotopes. One of the those isotopes is silicon-30, which has an atomic mass of 29.97376 amu and a percent natural abundance of 3.10%.
Explain the Delta H for this reaction is 54.8 kJ. Explain how much energy would be absorbed if 27.1 g of NH_4Cl reacts
What would the absorbance readings be for the acid and base forms of methyl red indicator at the acid wavelength? At the base wavelength?
A gas sample in a piston container has a volume of 2.0 liters at 1.0 atm and 27 oC. The temperature is changed such that the volume is decreased to 1.2 liters and the pressure is increased to 5.0 atm. What Kelvin temperature is needed to produce t..
If a mixture of gases contained 78% nitrogen at a pressure of 984 torr and 22% carbon dioxide at 345 torr, what is the total pressure of the system?
While building a character table struggling with remembering explain how to find the irreducible representation for Rz. Explain how to determine it for x, y and z but not for Rz, Rx or Ry
a mixture containing only agcl and agbr weighs 2.00 g. it isquantitatively reduced to silver metal which weighs 1.30
Fe2O3 + 3CO------2Fe + 3Co2 suppose that 1.14x 10^3kg of Fe is obtained from 1.82x 10^3 kg of samples Fe2O3. Assuming that the reaction goes to completion. What is % purity of Fe2O3 in orginal sample
What value do you get for E using the Nernst Equation? The equation is E standard = -RT/nFln[1/Cu]. The values to plug in are E = 0.340 - (8.314*298)/(2*96500)ln[1/0.10]. I calculated E = 0.31044 V. Is this correct. Any help appreciated
What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 155 min using a constant current of 15.0 A? (F = 96485 C/mol)
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