Vapor Pressure: Interpretation of Table H Using the vapor pressure curves in Regents Table H, answer the following questions:
1. What is the vapor pressure of ethanol at 50 °C.
2. How do the vapor pressure of the other substances compare to the vapor pressure
of
ethanol at 50 °C?
3. At what temperature does propanone have a vapor pressure of 180 kPa?
4. Which substance has a vapor pressure of 110 kPa at 120 °C?.
5. In order for water to boil at 70 °C, what must the pressure be?
6. What is the boiling point of ethanoic acid at 60 kPa?
7. Which substance has the highest normal boiling point?
8. Which substance has the lowest normal boiling point?
9. Explain how you arrived at your answer for # 8?
Estimate the following (from Regents Table H).
10. The vapor pressure of ethanoic acid at 80°C
11. The vapor pressure of water at 40°C.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude

1.) which of the following is a molecule but not a compound? a.he b.f2 c.h2o d.ch4 2.) what is a physical combination of substances? a.a compound b.a molecule c.a mixture d.an element 3.) what is a chemical combination of substances? a.a compound b.an atom c.a mixture d.an element 4.) what is the relationship between the solute and solvent in a solution? a.they form a compound b.they form a mixture c.they form molecules d.they form chemical bonds 5.) the gases in air dissolve in water. what would be one way to reduce the amount of a gas dissolved in water? a.add more water b.reduce the air pressure c.increase the air pressure d.stir the water 6.) how would you determine the solubility of a substance? a.find how well it dissolved various substances. b.find the mass and the volume of the substance. c.find the temperature at which the substance evaporated. d.find how much i was able to dissolve in a solute. 7.) the periodic table organizes all of the kinds of a.molecules. b.compounds. c.atoms. d.ions. 8.)what distinguishes two substances combined to become a compound vs. two substances combined to become a mixture? a.whether they can be easily separated b.whether they chemically bond together c.whether they both are visible d.whether they are heterogeneous 9.) the principle components of air are: n2 78% o2 21% ar 0.95% co2 0.038% this is a solution of a.molecules and atoms. b.molecules. c.compounds and molecules. d.atoms.