At 30°C, Substance A has a vapor pressure of 99. torr and Substance B has a vapor pressure of 59. torr.

Which has a higher enthalpy of vaporization?

a. Substance A
b. Substance B
c. Neither, A and B have the same enthalpy of vaporization.
d. It's impossible to know without more information.

The enthalpy of vaporization of Substance E is bigger than that of Substance F.

Which has the higher boiling point?

a. Substance E
b. Substance F
c. Neither, E and F have the same boiling point.
d. It's impossible to know without more information.

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5