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Given an unknown monoprotic(one hydrogen) acid. Make a 100 mL solution with 20% by volume. (mix 20 mL acid with 80 mL water) and titrate with NaOH. You must find the concentration of it the weak acid.
Three 10.00mL samples of juice were titrated with DCP that had a standardized concentration of 1.01x10-3M. The three titrations took an average of 13.82mL of DCP. Calculate the mass (in mg) in 50.00mL of juice. (MM Ascorbic Acid = 176.124 g/mol)
the frequency factor a is 8.7x 10 12 s- and the activation energy is 63 kj/mol, What is the rate constant for the reaction at 75C
An electrophilic addition is? Answer . a) An addition to an alkene initiated by a nucleophilic attack. b) An addition to an alkene initiated by an electrophilic attack
Li is in row 2 of the periodic table, Na is in row 3, and K is in row 4. How do their row numbers affect how their electron configurations end.
describe an experiment using only hot and cold water that would allow you to verify that the heat capacity of your coffee-cup calorimeter
Please give a balanced equation with a stepwise mechanism for the preparation of 3,4-methylenedioxychalcone from piperonaldehyde and acetophenone (with ethanol)
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
analyze run-off water for the presence of a.) heavy metals; b.) BTX( Benzene-toluene-xylenes); and c.) PNA ( polynuclear aromatic compounds).
Write the formula of the reactants and products-including the symbols for the state- (s), (l), (g), (aq)- then balance the equation.
If all of the electron groups around a single central atom are bonding, and the same outer atom is bonded to the central atom in each case, is the molecule polar, nonpolar, or does it depend on the identity
Calculate the volumetric size of a water molecule in vapor, assuming 1 mole of the vapor occupies 22.4 L, as if the vapor were an ideal gas
A sample of 30.0 ml of krypton gas, Kr, is at 756 mm Hg and 25.0 degree celsius. What is the new volume if the pressure is decreased to 325 mm Hg and the temperature is decreased to -12.5 degree celsius?
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