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The ternary compounds called chlorofluorocarbons, or Freons, have proved to be very valuable as refrigerants and as cleaning agents for circuit boards. Unfortunately, in the atmosphere these compounds produce chlorine atoms that catalyze the decomposition of the ozone that protects the earth from ultraviolet radiation. One of these compounds has the following mass percentages: 8.73% C and 13.83%F. What is the empirical formula of this compound? (If, for example, the compound was C2Cl3F, then one would input `C2Cl3F' - no spaces, no commas, proper case for the letters in the atomic symbols, and alphabetical order of the elements is required here.)
In a healthy wild type animal the Km (KT) of the glucose transporter (GLUT2) present in liver cells is 15 mM. What would happen to glucose transport in the liver cells of animal that expressed only a mutant GLUT2 protein with a Km of 1mM
A piece of copper with a mass of 218 grams has a heat capacity of 83.9 J/degrees C. What is the specific heat of copper.
a monoprotic acid that dissociates in aqueous solution. If a solution containing 0.50 M lactic acid is 1.66 percent dissociated to ionic form, calculate the value of Ka for lactic acid.
Using your knowledge of chemistry, describe at least one method that could be used to remove lead(II) acetate from a sample of wine.
indicate whether the trailing zero in each value is significant, not significant or possibly significant
If 3.0 Ml of distilled water is added to 2.0 ml of 0.35M CoCl2 solution, what is the concentration of the resulting solution.
What is the animal's initial radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission is 7.77 x 10^-12 J
highlight by clicking on the asymmetric carbons if any, and indicate whether each compound is Chiral and Number of stereocenters
What would you use to prepare a buffer system with a pH of around 4.2. What would you use to make a buffer with a pH of around 9.2? Describe the process you used to choose the correct buffer for each pH.
The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. what is the total pressure in the flask?
what is the equilibrium pressure of hydrogen sulfide if the equilibrium pressure of hydrogen is 0.103 atm and the equilibrium pressure of sulfur is 0.417 atm?
When a sample of oxalic acid (H2C2O4), which is a diprotic acid, is titrated with 0.250 M potassium hydroxide solution, 24.44 mL of the potassium hydroxide solution are required to neutralize the acid. How many grams of oxalic acid where present i..
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