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A) Give a complete analysis of the following data collected for the % of sulfate in a sample: 17.26%, 17.48%, 18.85%, 16.88%, 15.74%, 17.68%. For the analysis assume that the actual % of sulfate in the sample was found to be 16.95%. If any of the data can be discarded at the 95% confidence level, be sure to give complete explanation.
B) Calculate the absolute standard deviation for the value 17.26% if this value was obtained from the following data: weight of barium sulfate collected = (56.8361 +/- 0.0001g - 51.0915 +/- 0.0001g), weight of sulfate = answer x (96.034/233.391), weight of sample = (104.7715 +/- 0.0001g - 91.0768 +/- 0.0001g)
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 5.00 102 mL of solution and then titrate the solution with 0.163 M NaOH.
Choose the metal that is produced by electrolysis of its molten chloride salt. a) Li b) K c) Al d) Ca e) All of the above
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 decom..
The excess of acid needed 16ml of 0.25M Naoh for neutralization. then Calculate the percentage of calcium carbonate and magnesium carbonate?
In a study of ammonia production, an industrial chemist discovers that the compound decomposes to its elements N2 and H2 in a first order process. She collects the following data
Calculate the work for the expansion of CO2 from 1.o to 6.0 liters against a pressure of 1.0 atm at constant temperature
Calculate the binding energy per nucleon for 21H and 31H. The atomic masses are 21H, 2.01410 amu, and 31H, 3.01605 amu.
how much kno3 must be added to 500ml of media solution such that it would contain 0.1 m kno3? what is the equivalent in
Calculate the percentage yield of PURE ASA.
What is the pH of a solution made by mixing 100.00 mL of .20 M HCl with 50.0 mL of .10 M HCl. Assume that the volumes are additive
A certain gas is present in a 13.0 L cylinder at 3.0 atm pressure. If the pressure is increased to 6.0 atm the volume of the gas decreases to 6.5 L. Find the two constants k1 , the initial value of k, and k1, the final value of k, to verify whethe..
A sample of oxygen gas is collected over water at 23ºC at a barometric pressure of 751 mmHg (the vapor pressure of water at 23C = 21mmHg). What is the partial pressure of oxygen gas in the sample
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