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A 50-lb weight hangs from a string. Find the tensions T1 at 50 degrees and T2 at 30 degrees in the string, and write these vectors in terms of the vectors i and j. (Round your answers to one decimal place.)
Which one of the following pairs of acids and conjugate bases is incorrectly labeled or incorrectly matched?
How does a base, such as NaOH, help to catalyze the benzoin condensation when thiamine is present
State the selection rule for infrared-active molecules. Also, give an example of a molecule that is IR-active and identify an IR-active bond in the molecule, as well as where one would find its transition what frequency
Calculate the wavelength of the photon emitted when an electron makes a transition
Does increasing the size of an axial substituent always result in higher relative strain energies for the axial conformation
Asprin, whose structure can be found in the introduction, can be made from the reaction of a phenol and an anhydride. Give the phenol and anhydride that could be used to make aspirin?
What is the pH of an 85 mL solution containing .215 M NaHCO3 and .203 M Na2CO3?
Calculate the frequency of the light emitted when an electron in a hydrogen atom
The chloride in the sample was precipitated by the addition of 47.8 mL of a silver nitrate solution. What is the concentration of the silver nitrate solution?
Determine the mL KOH needed at the equivalence point and the ph upon the addition of this volume of KOH.
A 30.00 mL volume of a weak acid, HA, (Ka = 3.8 x 10^-6) is titrated with 39.00 mL of 0.0958 M NaOH to the equivalence point. What is the pH of the analyte solution before any base is added to it
How much salicylic acid is required to produce 1.1 x 102 kg of aspirin assuming that all of the salicylic acid is converted to aspirin
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