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100 g of copper Cp=0.38 J/qdeg AT A temperature of 100c is added. To 25 g h2o cp =4.184.qdeg at a temperature of 20 c calculate equilibrium
carboxylic acids react with alcohols to form esters which are found in all plants and animals. what is the percent by mass of carbon in each of the following esters?
Joe makes up a 0.1M solution of Potassium Fluoride. He uses a pH meter to test the pH of the solution. What is the most reasonable value he would find?
What volume of 0.855 M KOH solution is required to make 3.55 L of a solution with pH of 12.4?
The reactant concentration in a zero-order reaction was 9.00×10^-2 M after 100s and 2.50×10^-2 M after 390s . What is the rate constant for this reaction
At what pressure does the mean free path of argon at 25C become comparable to the size of 1dm^3 vessel that contains it? take ?=.36nm^2
The half-life of methylmercury in the human body is estimated to be close to 100 days. Suppose a person weighing 65 kg eats 0.5 kg of fish containing 0.5
Sorbic acid is a weak monoprotic acid with Ka = 1.7x10-5. Its acid anion salt (potassium sorbate FW = 150 g/mole) is added to cheese to prevent mold. What is the pH of a solution that contains 4.93 g of potassium sorbate in 0.5 L of solution
A bowl of 510 g of water is placed in a microwave oven that puts out 611 watts (J/s). How long would it take in seconds to increase the temperature of the water from 12.0oC to 49.5oC
what effect does the presence of sodium sulfite group on methyl orange have on the solubility of methyl orange in water. If this group were absent, would you expect the solubility of the resulting molecule to be more or less soluble in hexane than..
if a 2.6 reaction vessel initially contains 725 of cyclopropane at 485 how long will it take for the partial pressure
A solution of iodine in carbon tetrachloride is 0.10M. How much solvent (carbon tetrachloride) must be added to 50 mL of this solution
A tank is being filled through a valve by an ideal gas where the following applies: H=30*T(K) in J/mol for gas, R=8.314 in J/mol/K, H=40 T(K) for the liquid in J/mol (gas as liquid, different reference point than gas)
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