Chem Exam Practice

Which of the following molecules has the highest boiling point?
a. octane
b. octanoic acid
c. methanol
d. ethane
e. methane

Which of the following functional groups contains a hydrogen bond donor?
a. alkene
b. ester
c. alcohol
d. ether
e. alkyne

Which of the following statements describes the secondary structure of proteins?
a. the amino acid sequence
b. the hydrogen bonding interactions between amino acid chains
c. the part of the protein structure is usually destroyed by cooking
d. a and b
e. b and c

The critical temperature for propane is 370K and the critical pressure is 42.1 atm. Which of the following statements is true?
a. Propane is a and 42.1 asolid at 370K and 42.1 atm.
b. Propane vapor will condense at 370K and 42.1 atm.
c. Propane is a supercritical fluid at temperatures at 370K and any pressure.
d. Propane is a liquid at temperatures above 370K and pressures above 42.1 atm.
e. Propane is a supercritical fluid at temperatures below 370K and pressures above 42.1 atm

Which of the following substances is most likely to be miscible with water?
a. ethanol
b. mercury
c. octane
d. olive oil
e. glass

Which of the following statements is true the solubility of gasses in water?

a. The solubility of a gas increases with increasing temperature.
b T e so u ility of a as increase in ressure.,
c All gasses have the same solubility in water at a given temperature and pressure.
d. All gasses responds to changes in pressure in the same way.
e. The solubility of a gas in water is uneffected by changes in temperature and pressure.