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Identify the following compound from its IR and proton NMR spectra. C5H6O: IR: 3300 (sharp), 2102, 1634 cm-1 NMR: ? 3.10 (1H, d, J = 1 Hz); ? 3.79 (3H, s); ? 4.52 (1H, doublet of doublets, J = 10 Hz and 1 Hz); ? 6.38 (1H, d, J = 10 Hz)
A gas under a pressure of 74 mmHg and at a temperature of 75C occupies a 500.0-L container. How many moles of gas are in the container?
1. H2O2(aq) acting as an oxidizing agent in acidic solution. Write the balanced half reaction?
To what volume should you dilute 150 mL of an 8.00 M CuCl_2 solution so that 55.0 mL of the diluted solution contains 5.9 g CuCl_2
To determine the freezing points of distilled water, 1m glucose, 1m NaCl, 1m CaCl2. Use the freezing point of the pure water as a baseline to determine deltaTf for each of the solutions
what species( ions/molecules)are present at the halfway point in the titration tword the stoichometric point in a.
what is the concentration of fructose in the resulting solution in uM? C) If you make three serial 1:5 dilutions, using the solution above, what is the concentration of the final solution?
If no heat is lost to the surroundings, what will be the final temperature of the mixture?
A chemical reaction is known to occur spontaneously under standard conditions. Which of the following statements is/are true (more than one answer may be selected):
Oxygen and hydrogen atoms combine to form molecules of wate. At the nuclear leveil, if one oxygen atom and one hydrogen atom were fused
Choose the answer in which the three atoms and/or ions are listed in order of increasing EXPECTED size (smallest particle listed first) assuming that the simple shell model of the atom is correct.
trans-2-Butene is more stable than cis-2-butene by only 4 kJ/mol, but trans-2,2,5,5-tetramethyl-3-hexene is more stable than its cis isomer by 39 kJ/mol. Explain.
One of the lines of the hydrogen line spectrum has a wavelength of 434.1 nm. It is known that all of the visible lines of the hydrogen spectra result from an electron
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