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A sample of an unknown compound was analyzed and found to contain 19.97% phosphorus and oxygen - what is the empirical formula of the compound?
then we cooled in an ice bath. then we washed it with water. and then added bicarbonate to netralize any acetic acid or sulfuric acid present. then we did an an extraction.
a rigid tank of 0.03(cubic meters) volume contains a mixture of liquid water and water vapor at 80kPa. The mass of the mixture in the tank is 12kg. Calculate the heat added and the quality of the mixture when the pressure inside the tank is raised..
Write a balanced reaction for the acid-base reaction of diethylbenzyl phosphonate with sodium hydroxide. Which hydrogens are the most acidic?
what minimum requirement is needed to obtain reproducible results with a single beam spectrophotometer
determine the net change of oxidation number of each of the elements in the redox equations.
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C5H12
Calculate the de Broglie wavelength of a 143g- baseball traveling at 90mph ?
if 0.10M aqueous solutions are prepared of each of the following acids, which produces the solution with the lowest pH?
calculate the amount of energy required in calories to heat 145g of h2o from 22.3 degrees c to 75.0 degrees c.
The procedure calls for the addition of 7-8 drops of aqueous NaOH. What is the purpose of the base here? Be specific and show the reaction that occurs
What is the theoretical yield of SO 3 produced by the quantities described in Part A and How many Oxygen molecules are required to react with 7.82g of S?
Three gases (8.00 rm g of methane, CH_4, 18.0 g of ethane, C_2H_6, and an unknown amount of propane, C_3H_8) were added to the same 10.0 L container.
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