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In Chemistry: 15.00 mL of NaOH is obtained from a dispensette. Before titrating with 0.2500M HCL the initial volume of acid in the buret is read as 2.08 mL. At the end point the final volume of acid in the buret is 25.20 mL. What is the concentration of the NaOH.
In Hexaphenylbenzene synthesis, using tetraphenylcyclopentadiene and diphenylacetylene, what volume of carbon monoxide, measured at STP, is produced by the decomposition of 38 mg of tetraphenylcyclopentadienone
The numbers indicate the relative amounts present at equilibrium, compared to 1-butene as the standard. 1-Butene: 1.0 cis-2-Butene: 7.2 Trans-2-Butene: 85 Explain this trend qualitively.
A mixture of amino acids is subjected to paper electrophoresis at pH 6.0. The amino acids present in the mixture are Val, Glu, Phe, Ser, and Lys. Which amino acids will migrate toward the cathode? Toward the anode? Explain.
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
suppose .853L of H2 is collected at 15 degrees celcius and 782 mmHg. how much electricity in coulombs must have passed through the solution
For the reaction PCl5-> PCl3+Cl2 kp= 26.03 at 800K. calculate the equilibrium partial pressure for the reactant and product if the initial pressures are PPCl5= .54 atm and PPCl3= .37 atm.
What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt by a current of 20 A. Express your answer using two significant figures.
Assume that a reaction takes place at 296 K and 306 K. What must the activation energy be for the rate constant to double as described.
During this process, 346 J of work was done by the system and its internal energy 9185 J. What is the specific heat of the gas?
nitrate solution according to the unbalanced equation given below. Hg(NO3)2(aq) + NaI(aq) = HgI2(s) + NaNO3(aq) (a) What volume of Hg(NO3)2 is required for complete precipitation?
Assuming it is composed entirely of 206Pb, 207Pb and 208 Pb and the percentages of the two lightest isotopes are equal, calculate the relative percentages of these isotopes in the natural element.
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is 100K * k (E represents epsilon and k is Boltzmann's constant). Assume that there are 10 particles.
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