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How many kilojoules a) are required to raise the temperature of 33.4 g CH3CH2OH(l) from 19.6 to 49.8 C b) must be removed from a 325 g sample of CH3(CH2)6CH3(l) to lower the samples temperature from 82.4 to 31.6?
The pyrene excimer emission spectrum at a (higher/lower/same) wavelength than (as) the excited pyrene fluorescence emission spectrum. Explain.
an ice cube tray holds 515 g water. if the water initially has a temperature of 21degc how many kilojoules of heat must
The oxygen content of a fuel that is recommended in order to ensure complete combustion about 2.7%. (a) Consider a case where methyl tertiary butyl ether (MBTE) is to be added to the conventional gasoline.
when mercury ii oxide is heated it decomposes into mercury and oxygen gas according to the following balanced equation.
find the vapor pressure of a water solution in which the mole fraction HgCI2 (a nonvolatile solute) is 0.163 at 25.
A 45- piece of ice at 0 is added to a sample of water at 20. All of the ice melts and the temperature of the water decreases to 0. How many grams of water were in the sample
The Ka of a monoprotic weak acid is 7.78 × 10-3. What is the percent ionization of a 0.141 M solution of this acid?
Which of the following hand tools would be classified as "chiral?" Ignore any writing that might normally appear on the tool
Use your complete rate law for the dye bleaching reaction to estimate the reaction rate at 25 degrees celcius, if the concentrations of bleach and due are both .10 M.
write a chemical equation for rm hclaq showing how it is an acid or a base according to the arrhenius definition.
The best Lewis structure for sulfuric acid has zero formal charges, sulfur as the central atom, and no bonds between S and H. How many single and double bonds, respectively, are there in this Lewis structure
The LiAlH4 reaction with ketones and that you must use a anhydrous aprotic solvent with it because of how violent it reacts with water and alcohols, What WOULD actually happen if it reacted with an alcohol? for instance butan-1-ol? Since this isnt..
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