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A 50.0 ml sample of 0.100 M HClO4 is titrated with 20.0 ml of 0.200 M NaOH. What is the pH of the resulting solution
"Crossed" or "mixed" aldol condensations are practical for synthesis, if one of the aldehydes (or ketones) has no alpha-hydrogen atoms. Explain.
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added. Write a chemical equation for the neutralization reaction that occurs.
How many kilograms of sodium fluoride would be needed to treat an 8.25x10^7 gal reservior?
The reaction of 2.5g of Al with 2.5g oxygen (actually) produces 3.5g of Al oxide. Calculate the % yield of aluminium oxide.
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 39.0 mL of 0.550 M Cd(NO3)2 solution?
Vapor pressure measurements at several different temperatures are shown below for mercury. Determine graphically the molar heat of vaporization for mercury.
what are the concentrations of each component If a 10.00L vessel has 2.50 mol CO 2 and H 2 O, and 5.00 mol CO 2 and H 2 gas at 588°K, (Kc = 31.4 at 588°K), at equilibrium?
If the barometeric pressure was 0.98 atm when the mercury level in an open-end manometer connected to a flask of gas was 177 mmHg higher on the side open to the atmosphere than on the flask side
Predict the wavelength (in nm) of the lowest-energy electronic transition in the following polymethine ion:((CH_{3})_{2}N^{+}=CH-CH=CH-CH=CH-N(CH_{3})_2) Assme that all the C-C and C-N bond lengths equal
what is the energy difference between the heats of formation you calculated for carbocation A and B?
WHen electrons in a molecule are not found between a pair of atoms but move throughout the molecule, this is called
A sample of helium gas is at a temperature of 100 K. If both the volume and pressure each double what is the final kelvin
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