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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.)
A center of chirality (from the Greek cheir, hand) imparts the property of handedness to a molecule. In this part of the experiment, the left- or right- handedness of molecules with a chiral center will be illustrated with models.
The optical rotation of a sample composed of only D-lactose is determned [a] abs = 0.99 degrees. [a]d is known to be 52.3 degrees of D-lactose.
Assuming this mechanism is correct, which is the rate-determining step if the experimental rate law is first order in nitryl chloride?
Estimate how many barrels of fluid this tank could hold. Clearly state any assumption you must make to determine this and explain how you arrived at your assumption
The Clean Air Act mandates that certain metropolitan areas must add oxygenates to the gasoline that is sold in that area. What is the reason that oxygenates are added to gasoline?
what was the original total concentration of cesium and the corresponding radioactivity in Ci/L?
A 475 mL sample of gas is collected over water at 27°C and a total pressure of 675 mm Hg. If the vapor pressure of water at 27°C is 26.7 torr, what is the volume of the gas sample at standard pressure?
A 2.00g sample of a particular compound was dissolved in 15.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85 Celcuis.
A solution of 16.1 g of an unknown solute in 600 grams of water boils at 100.28 C. What is the molar mass of the solute
piece of silver when placed in a cup of 200 mL of water raises the water's temperature from 25.0 C to 31.5?
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
A sample of krypton gas at a pressure of 0.621 atm and a temperature of 20.7oC, occupies a volume of 17.2 liters. If the gas is compressed at constant temperature to a volume of 5.62 liters, the pressure of the gas sample will be
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