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What are the freezing point and boiling point of 0.20 m glycerol in ethanol?
What is the freezing point of 2.04 g KBr and 4.84 g glucose in 189 g of water?
Using curved arrows to symbolize the flow of electrons, write the mechanism for the steps involved in the conversion of 9-fluorenone to 9-fluorenol with sodium borohydride followed by aqueous acid
The first equivalence point for the titration of 0.2567 grams of a weak acid is reached when a volume of 26.80mL of 0.0510 M NaOH(aq) has been added. What is the molar mass of the acid?
use the half reaction method to balance each of the following in acidic solution except as indicated:
Air is a mixture of N2,O2,Ar,Co2,Ne,He,CH4,lessor amounts of the other gases and possibly substantial amount of H2O in vapor form.
Neon crystalizes in a face-centered cubic lattice. It's density is 1.45 g/cm3. What is the edge length of the unit cell? Note: The atomic weight of Ne is 20.2 g/mol, and Na is 6.02 x 10^23/mol
Write down the secular determinant for the allyl radical, Ch2=CH-Ch2, and estimate the pi-binding energy.
how many moles of methane occupy a volume of 2.00 L at 50.0 degress C and 0.500 atm? (R=0.0821atm x L/mol x K)
Using terms in the Hartree-Fock energy expression, explain why the lowest-energy triplet state of the He atom is higher in energy than the singlet state.
The Cl2 removed occupies a 10.0 L container at .500 atm at 25C. How many g of Ne are present in the original container?
a gas expands and does p-v work on the surroundings equal to 343 j. at the same time it absorbs 159 j of heat from the
Calculate the percent composition of each element in the compounds Benzene(C6H6) and Acetylene(C2H2). Since these are different compounds with very different properties, it may seem that this is an exception to the law of definite proportions.
You have 100.0 mL of 0.100 M aqueous of each of the following acids: HCN, HF, HCl, and HC2H3O2. You titrate each with 0.100 M NaOH (aq). Rank the pHs of each of the solutions when each are titrated at the equilibrium point, from highest to lowest ..
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