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In thin layer chromatography what mobile phase would give poor mobility of methyleneblue? please explain
If you begin with 250.0mL of 0.36 mol/liter NaCN, how many liters of the HCN solution must be added to the NaCN to prepare the buffer. Now add 1.60grams of NaOH (solid) to the buffer. What will be the new pH
The addictive painkiller morphine, C17H19NO3, is the principal molecule in the milky jiuce that exudes from unripe poppy seed capsules. Calculate the pH of a 0.0227 M solution of morphine, given that Kb = 7.9E-7.?
Which of the following ionic compounds will be more soluble in acid solution than in water? Explain your choice/s Determine whether the anions are basic and use Le Chatelier's principle.
A 750 mL vessel contains 2.50 g of an unknown gas at a temperature of 0 C and pressure 300 mm Hg. A small sample of this gas is removed from the vessel and transferred into a new vessel at 500C and pressure 760 mm Hg. What is the density of gas af..
what is the solubility of helium in water at 30 ordmc if its partial pressure above the solution is 350 torr? the
In a 1cm cuvette, you measure a sample with an absorptivity constant of 10 L/mol•cm. The absorbance of the sample is 0.5. What is the concentration of the sample in moles/L
What is the expected % yield of product M in reaction N? Carry maximum number of significant figures through to final answer, then round to one decimal place.
The intiala rates at various substrate concentrations for an enzyme-catalyzed reaction are as follows.
One hectare is equal to 10,000m2. In the English system, land is often measured in acres (1 acre= 160 rod2). Use the exact conversions and those given (5.5 yards= 1 rod) (40 rods= 1 furlong) (8 furlongs = 1 mile) to calculate the following.
Determine the molar amounts of NO, O2 and NO2 after a complete reaction. NO=? O2=? NO2=?
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
Draw the structure of the product that is formed when methyl propanoate undergoes a reaction with an excess
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