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Explain what is more soluble, a solution of free histidine or a solution of histidine tetrapeptide at pH 6 net charge +2
explain how to correct for the partial of water vapor when calculating the partial pressure of a dry gas is collected
A gas sample has a volume of 541mL when at 65 degree C and 760 mm Hg, thus what is the volume in milliliters will it occupy at 25 degree C and 890 mm Hg,
a 10.00-mL sample of sulfuric acid from an automobile battery requires 35.08 mL of 2.12 M sodium hydroxide solution for complete neutralization. what is the molarity of the sulfuric acid? sulfuric acid contains two acidic hydrogens.
Silver iodide is an extremely insoluble yellow solid. What would you expect to observe when (CH3)3Cl and AgNO3
How many mL of a 2.0 M solution of NaOH would bve needed in order to have 0.500 mol of NaOH? (Molar mass of NaOH is 40.0 g/mol)
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.84 at 25°C
Which of the following experimental observations best justifies Bohr's assertion that the energy of the electron in the isolated Hydrogen atom is restricted to certain allowed values (quantized)
A 0.850-mole sample of nitrous oxide, a gas utilized as an anesthetic bydentists has a volume of 20.46 L at 123°C and 1.35 atm. Explain what would be its volume at 468°C and 1.35atm
What can make the titrated solution at the equivalence point in an acid-base titration have a pH not equal to 7
the pka of benzoic acid is 4.2 show mathematically that this acid is 50% ionized at ph 4.2? Part B is Use this result to explain why precipitation of benzoic acid is incomplete if the pH of an aqueos solution of benzoate ion is lowered to Ph 7 by ..
The molar absorptivities for methyl red in its acid form are 44640 M^-1cm^-1 @ 524 nm and 3860 M^-1cm^-1 @ 425nm and for methyl red in its base form are 740 M^-1cm^-1 @ 524nm and 18530 M^-1cm^-1 @ 425nm
Catalyzes the synthesis of ATP when protons flow down their electrochemical gradient 4. Utilizes ATP hydrolysis to pump protons down their electrochemical gradient I picked 1/3/4, because 2 uses protons and not electrons.
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