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Predict what a plot of temperature versus the volume of distillate will look like for the simple distillation and the fractional distillation of (a) a cyclohexane-toluene mixture and (b) an ethanol-water mixture.
A 4.369g sample of metal is placed in a flask. water is added to the flask and the total volume in the flask is read to be 126.4ml.
Which radioactive decay particle poses the greatest risk if it is external to the body? Why? 2- Which is safer, an isotope with a short half-life or one with a long half-life?
A brand new amino acid was recently discovered "calline" it is 3 ionizable groups with pka values of 2.3, 4.7
The NAA used here was purchased from ACME Laboratories as a 10 mg/ml solution. How many grams of NAA are in 100 ml of a 2mg/liter solution
At 25 degrees the rate constant for the first order decomposition of a solution is .00640. If the starting concentration is .0314M, what will concentration will remain after 62.0 min at 25 degrees
At 40°C, the vapor pressure of heptane is 92 torr. If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
What is the concentration of hydroxide ions in pure water at 30 degrees C, if Kw at this temperature is 1.47 x 10 to the -14th
how many phosphoester bonds and phosphoanhydride bonds are in adenosine
Fatty acids are soluble in solvants such as petroleum ether, but the salts of fatty acids are not. Explain this observation. What is another name for a salt of a fatty acid
if 100 mL of 0.100 M NaCl is added to 100 mL of .01 M NaCl, what is the concentration of Na ions in the final solution?"
Ionization energy is the energy needed to eject an electron from an atom. Compute the ionization energy of a hydrogen atom in its first excited state (n = 2).
At what temperature would the rms speed of atoms in an Ar(g) sample equal that of atoms in a He(g) sample at SATP
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