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1-propanol (P1° = 20.9 Torr at 25 °C) and 2-propanol (P2° = 45.2 Torr at 25 °C) form ideal solutions in all proportions. Let x1 and x2 represent the mole fractions of 1-propanol and 2-propanol in a liquid mixture, respectively, and y1 and y2 represent the mole fractions of each in the vapor phase. For a solution of these liquids with x1 = 0.660, calculate the composition of the vapor phase at 25 °C.
Discuss the difference between Mass Spectroscopy, Nuclear Magnetic Resonance,
Calculate the percent yield for the reaction: P4 (s) + 6 Cl2 (g) → 4 PCl3 (l) if 75.0 g of phosphorus reacts with excess chlorine gas to produce 111.0 g of phosphorus trichloride.
Milk spoils about 5x as fast at 300 K as it does at 250 K. What is the apparent activation barrier for the "milk spoiling" reaction
(1) write the electron configuration of Co (III) (2) what is the geometry structure of this complex ion? Linear, Tetrahedral, Square planar or Octahedral. (3) predict the number of unpaired electrons in [Co(en) ] (4) draw the crystal field diagram..
If 36.0 mL of 0.150 M HCl(aq) is needed to neutralize all the NH3(g) from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
experiment to determine delta H of solution, would you expect to get a larger, smaller or identical temperature change? why?
Calculate the concentration of argon in lake water at 20C. if the partial pressure of argon is 0.0090 atm and Henry's constant is 0.0015
The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (C3H8) to burn it completely.
calculate the concentration of calcium ion (in mg/L -1) in the water (25C). What assumptions are made in carrying out the calculation?
what is the q solution in Jouls and what is the q rxn in Joules? What is the Delta H rxn in KJ/mo of HNO3 neutralized?
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
Which solution behaves more ideally, a 5.0% by weight NaOH (aq) solution (b.p. = 102 ºC) or a 50. % NaOH (aq) solution (b.p. = 140. ºC) Support your answer with calculations (hint: what are the theoretical boiling points for these solutions).
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