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Potassium chlorate (KClO3) was heated to give oxygen.
2KClO3 (s) ? 2KCl (s) + 2O2 (g)
A volume of 550mL of gas was collected over water at 21oC and an atmospheric pressure of 743 Torr. The vapor pressure of water at 21oC is 19 Torr. How many moles of oxygen were collected?
What is the area of the circuit element in cm^2? Write your answer in scientific notation. Round your answer to 3significant digits.
what is the effect on the boiling point of a solution e.g. water produced by a soluble nonvolatile substance e.g.
Calculate the vapor pressure of the solver over the solution at 25 degrees C. The vapor pressire of pure water at 25 degrees C is 23.8 mm Hg
What are the advantages of working with microscale equipment as opposed to larger equipment in a Williamson ether synthesis of phenacetin experiment.
An 8mL sample of an unknown concentration of NH3 is titrated with HCl. It is found that 12mL of 0.10M HCl is required to reach the equivalence point. What was the concentration of the NH3 in the initial 8mL sample?
How much carbon dioxide in kilograms is produced upon the complete combustion of 29.1 L of propane (approximate contents of one 5-gallon tank)
the rate of a first order reaction is 4.6 x 10 to the -4 power at 638k. if the activation energy is 104 kjmol calculate
a solution is known to contain bi3 ion or cd2 ion or both. describe the tests that could be used to seperate and
The iron content of a municipal water supply was determined by an atomic absorption procedure. The absorbance of the water, after a five-fold dilution, was 0.646 at 248.3 nm. A standard solution
Find the equation for the work of a reversible, isothermal compression of 1 mol of gas in a piston/ cylinder assembly if the molar volume of the gas is given
Large beds of rocks are used in solar-heated homes to store heat. Assume that the specific heat of rocks is 0.82J/g-K. a. Calculate the quanituty of heat absorbed by 50.0kg of rocks if their temperature increases by 12.0 C. b. What temperature cha..
Carboxylic acids and phenols can be separated by chemically active extraction if the pH of the aqueous layer is properly chosen. Phenols are sufficiently acidic to be extracted into aqueous sodium hydroxide
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