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Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
Identify the major type of attractive force between particles of each of the following substances: a) HCl; b) MgF2; c) PBr3; d) Br2; e) NH3.
Hydrochloric acid HCL, completely ionizes when dissolved in water. Calculate the PH of a solution containing
A chemical reaction at equilibrium is heated, briefly, by holding it over a flame. The equilibrium is seen to shift toward the products. What can be said about the enthalpy and entropy of the reaction
A solution is made by dissolving 0.100 mols of NaOCl in 100.0 mL of water. The Ka of hypochlorous acid (HClO) is 3.0*10^-8 at 25.0 degrees C.
Draw a titration curve for both of these peptides. Be sure to label the axes properly, indicate the pKa values, the equivalence points and the buffering regions.
What was the concentration of the original hydroxylamine solution? What is the pH at the equivalence point? Which indicators should be used to detect the endpoint of the titration?
The following compound has two stereoisomers. One has a dipole of 0 D, and the other has a dipole moment of 2.95 D. Draw the structure of the stereoisomer with dipole moment of 2.95 D
identities of the components in a mixture by Gas chromatography may be determined by the technique called "spiking".
The following data apply to 25oC and 100kPa. Assume the specific volume Vs, and Kt are constant with respect to pressure changes. delta G(graph) = 0
Using the data below and Coulomb\'s law, calculate the energy change for this reaction (per formula unit of MgS). Mg + S =Mgs
Some watch dials are coated with a phosphor, like ZnS , and a polymer in which some of the first H atoms have been replaced by third H atoms, tritium.
A 33.5 mL sample of a KOH solution of unknown concentration requires 22.1 mL of 0.200 M solution to reach the end point in a titration. What is the molarity of the KOH solution?
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