Water vapor is not considered an impurity in the gas stream.

Which point on the potential energy diagram corresponds to the species shown to the right for the electrophilic nitration of benzene with HNO3/H2SO4?

Nitration of benzoic acid has a reaction rate which is ________ than the nitration rate of benzene and gives primarily the ________ product(s).

The most common use for processed natural gas is to be burned as a  _________________.

Rank the following compounds in order of decreasing reactivity to aromatic electrophilic bromination. I. benzene II. toluene III. benzoic acid IV. phenol

Atmospheric pressure is usually expressed as ______________________, the average pressure at sea level.

Sedimentary rock such as sandstone and__________________ are the most common reservoir rocks.

Which one of the following is the electrophile in the reaction shown below?

Which specific tissue is shown below?

Skin tests are reliable indicators for the diagnosis of food-related allergies. The advantage of using a skin test vs. a blood test is that the results are immediate.