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Short Essay About Chemistry
Write a brief final assessment of whether topics covered in the course changed the way you think about chemistry, and how. OR, write about your future plans/dreams for after graduation. OR, write about a current event that occurred after Thanksgiving where chemistry played a role and explain this to a liberal arts major or politician. (250-400 words should be plenty)
A certain substance, intially present at 0.500 M, decomposes by second-order kinetics with a rate constant of 4.00 x 10-1 L/mol min. Calculate the time (in minutes) required for the system to reach a concentration of 0.370 M.
a 1.33 m solution of citric acid h3c6h5o7 in water has a density of 1.10 gcm3. calculate the mole fraction of the
A quantity of C2H4 gas occupies a volume of 100L at 37C and a pressure of 720 mm Hg. Calculate the weight in grams of this gas.
A gas sample has an original volume of 700 ml when collected at 750 mm and 25°C. What will be the volume of the gas sample if the pressure increases to 810 mm and the temperature increases to 30°C?
What happens to the temperature of a liquid as evaporation occurs. A. The temperature of the liquid increases. B. The temperature of the liquid remains the same. C. The temperature of the liquid decreases. D. Liquids cannot evaporate
Calculate the heat required to convert 25.0 g of C2Cl3F3 from a liquid at 5.00 degress celsius to a gas at 82.00 degrees celsius.
When the sample is ready to boil, the beaker is removed and the reaction is allowed to settle for a moment. What reaction has taken place. Provide the chemical equation. Since the reaction involves concentrated acid, then it must dehydration of wa..
Question- The reaction of chloromethylcyclobutane with aluminum chloride yiel methylenecyclobutane, methylcyclobutane, and cyclopentane. Show the mechanism or mechanisms for these products. Do not draw a primary cation in these mechanisms as it is h..
Assuming that the total volume of the solution does not change after 12.0 moles of HCl are added to 1.0 L of a solution containing 1.0 mole of Hg2+ ion, calculate the equilibrium concentration of Hg2+ in the solution Hg2+ + 4CL- [HgCl4]2-, Kf = 1...
if a room has a volume of 127m3 then calculate its volume a in km3? b in dm3? c in cm3?a suspension of an infant
The speed of a photon is 4.5x10^5 ms^-1. If the uncertainty in its momentum is to be reduced to .01 percent, what uncertainty in its location must be tolerated
Why would you expect phosphorous to require less ionization energy than sulfur to remove a valence electron?
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