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Which is the anode and which is the cathode of a concentration cell of Au/Au 3+, where the Au 3+ is 0.89 M in one half and 0.14 M in the other? What half reactions occur at each?
Ethanol should be disposed of properly as hazardous waste in the appropriate waste container. Can have environmental implication as animal studies have reported development of tumors and mutagenic effects.
For the reaction Cl2 + 2KBr -> 2KCl + Br2, calculate the percentage yield if 200 g of chlorine react with excess potassium bromide to produce 410 g of bromine
A 16 ounce specialty coffee drink contains 216 mg caffeine. If all the caffeine is extracted and dissolved in an equal amount of water, what is the pH of the solution. What is the percent ionization.
Calculate the pH of a buffer solution made by adding 10.0g of anhydrous sodium acetate (NaC2H3O2) to 100 ml of 0.100M acetic acid.
If 30 ml of 0.150M cacl is added to 40ml of 0.1 M AgNo3. What is the mass of AgCl preciptate
If a sample known to be about 10,740 years old has 400 carbon-14 atoms, how many atoms were in the original sample when the organism died.
If the enthalpy change for the reaction below is delta H= 198kJ, how many grams of sulfur dioxide are produced when 804 kJ is absorbed?
phosphoric acid can be prepared by reaction of sulfuric acid with phosphate rock according to the equation ca3po42
converting liquid water to solid ice releases 1.44 kcal/mol.
The equilbrium constant for the decompositon at 25 degrees C is 2.3 X 10 ^ -4. At 25 degrees C , 7.5 g of NH4CO2NH2 is sealed in a 10 L flask and allowed to decompose.
question calculate the vapor pressure at 25 degrees c of an aqueous solution that is 5.50 nacl by mass. the pure vapor
The element X occurs naturally to the extent of 70.23% 30X and the rest 32X. What is the atomic mass of X? (Use 4 sig. fig.)
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