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Using your knowledge of ph and solubility, predict what the charge would be on the amino acid phenylalanine at ph 2.0, 13.0, and at its isoelectric point of ph 5.48. Include drawings of each of the three ph cases for phenylalanine, and be certain to include the appropriate locations for charge on your molecular structure.
The nitrate ion reaction is positive. In this case, is it accurate to state that nitrate ion was present in the original solution? Brie?y explain, referencing specific chemical reactions to support your explanation.
Calculate the concentration of an pilocarpine solution with a pH = 9.34. The Kb of pilocarpine is 7.41x10-8 i need to know the steps to do problems like this one, if the steps can be simplified that would be great, thanks a lot.
Under certain conditions of temperature and pressure, 15.0 mL of a gas "Cb" with a molas mass of 56.0 g/mol effused through a pinhole in 30min.
pure ethanol has a density of 0.78945 gcm sup3 at 20.0 degc and 0.80625 gcmsup3 at 0.0deg c. what will be the
Calculate the mass of I2 produced at the anode if a current of 2.85 A is passed through a solution of KI for 56 minutes.
Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.25 x 10^23 particles
Why is the water bath used to heat the reaction? 4)What is the mechanism of the reaction of phenylmagnesium bromide and CO2? Include the workup steps. 5) In this experiment, it is important to use freshly obtained dry ice. Why?
Eugenol can also be isolated from cloves using extraction with CO2. discuss the advantages and disadvantages of distillation versus CO2 extraction.
Caffeine has a distribution coefficient of 4.6 between methylene chloride and water. If 52 mg of caffeine are added to a conical vial containing 2 mL of water and 2 mL of methylene chloride, how much caffeine would be in each layer after the mixtu..
Gaseous ammonia reacts with oxygen gas to produce gaseous nitrogen monoxide and liquid water. If 750 grams of ammonia and 750 grams of oxygen gas were mixed
Give the shape of each molecule in problem and describe whether each molecule is polar or non polar and tell whether each is soluble or insoluble in water
Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 11.9 torr at 35°C. The vapor pressure of pure ethanol at 35°C is 1.00 multiplied by 102 torr
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