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If 30.0 mL of 0.15 M Ba(OH)2 was needed to neutralize 50.0 mL of an H3PO4 solution. What is the concentration of the original H3PO4 solution?
Do you notice any trends or can you make any generalizations about where certain types of liquids fall on the pH scale?
The boiling points of HCl and CO2 are nearly the same (-85 degrees C and -78 degrees C). Explain why CO2 can be removed from an aqueous solution by boiling briefly while essentially no HCl is lost even after boiling for one hour or more
Why is it important to keep the developing chamber covered with plastic wrap during the development of the chromatogram?
identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm-1 NMR: ? 3.10 (1H, d, J = 1 Hz); ? 3.79 (3H, s); ? 4.52 (1H, doublet of doublets, J = 10 Hz and 1 Hz); ? 6.38 (1H, d, J = 10 Hz)
1) In mammals, which two molecules serve as a reservoir of amino groups in the body? What are they converted to/from as they receive or donate -NH2?
How many different aldols (ß-hydroxyaldehydes), including constitutional isomers and stereoisomers, are formed upon treatment of butanal with base?
Unfold the enzyme with urea and 2-mercaptoethanol. Then incubate and crystallize it in the presence of the substrate followed by X-ray crystallography.
It takes 51.0 J to raise the temperature of an 11.0 g piece of unknown metal from 13.0 degrees celcius to 24.0degrees celcius What is the specific heat for the metal? Express your answer numerically, in Joules/gram Degrees celcius
Problem- Show that the free energy change for the succinate dehydrogenase reaction catalyzed by Complex II is insufficient to drive ATP synthesis under standard conditions.
What does a water molecule that loses a hydrogen become?
1. A rocket has an upward acceleration a(t) =9.0t m/s^2 fpr the first 5 seconds of its flight, and thereafter, is in freefall.
Methylene blue is reduced by the ascorbic acid and, as that occurs the methylene blue is converted into the colorless H2MB+ compound. We used this bleaching to measure the reaction rate
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