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A.Suppose you have a mixture of 2 substances. You know one of the substances is either 2-chlorobenzoic acid or diphenyl acetic acid. The second substance is either p-dibromobenzene or acenaphthylene. Describe how you would separate the two substances, and once they are separated, how you would identify which two substances you have.
B. Provide a separation scheme, to separate a mixture of phenol, aniline, and naphthalene (you will need to look up the structures of these compounds before you begin, of course, and determine if they are solids or liquids at room temperature in order to devise an accurate separation scheme)
Calculate the pH of a solution formed by mixing 250.0 mL of 0.15 M NH4Cl with 100.0 mL of 0.20 M NH3. The Kb for NH3 is 1.8 x 10-5.
how many molecules of oxygen gas are needed to react with 4.2 moles of C3H8O?
Explain the structure of the main mononitration product(s) of 3 bromo 1 nitrobenzen?
What will be the resultant pressure when the stopcock is opened?
How many moles of H+ are in 1.000 mL of the aqueous 2.500 molar HCl solution mentioned above? What is the normality of solution mentioned above? How many H+ ions are present in 1.000 mL of this solution?
At -13.0 °C (a common temperature for household freezers), what is the maximum mass of sucrose (C12H22O11) you can add to 3.00 kg of pure water and still have the solution freeze?
A 93.7 g (5.20 mole) sample of water is heated to exactly 94.4 celsius. It is then added to 90.1 g (5.00 mole) of water at 22.5 celsius in a styrofoam cup calorimeter.
In an experiment for measuring water hardness in a water sample, using Atomic Absorption Spectrophotometry, I obtained a value of 173.74 ppm hardness for my water sample.
Calculate the number of grams of glucose must be dissolved in water in order to produce 100.0 ml of a 3.700 M glucose solution (C6H12O6). Density = 2.601
Why is glycogen debranching enzyme necessary? a) It allows regulation of the rate of glycogenolysis. b) Because glycogen phosphorylase cannot convert G1P to G6P
The answer to formula and calculation, survey of physical chemistry, State all of the assumptions (e.g. ideal gas etc). (previous reaction is 2H??2(g) + O2(g) ----> 2H2O(g))
If you used 8,400 kilojoules you expend in energy in one day to heat 49,000 grams of water at 18 degrees celcius, What would be the rise in temp?, and What would be the new temp of the water?
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