Bromination of (Z) ?3? hexene yields racemic 3,4? dibromohexane. Provide a detailed mechanism for formation of the (3S, 4S) ? enantiomer, specifically showing Br2 addition occurring from the top face of the alkene.

Which of the following solutions will not neutralize a weak base solution of pyridine (C5H5N) ? vinegar ammonia carbonated soda drink pickle juice

In the presence of an acid catalyst, cyclohexanol (100.16 g/mol) is dehydrated to give cyclohexane (82.14 g/mol) and water. A dehydration reaction starting with 3.3 g cyclohexanol produces 2.4 g cyclohexene.

From identifying the elements that make up a star, astronomers can determine the star's what?

The sodium atom loses an electron to form a sodium ion (Na+). Which statement is correct with respect to its atomic radius? The sodium ion has a larger radius than the atom. The sodium ion has a smaller radius than the atom.

The ability to perceive others' emotions can be attributed to which of the following parts of the brain? A. Amygdala B. Hippocampus C. Hypothalamus D. Thalamus

Is a sample of liquid nitrogen more dense than a sample of nitrogen gas

You have a balloon containing 1 L of air at STP in a vacuum chamber. What will the volume of the balloon be when you reduce the pressure by half and increase the temperature to 373 K?

Which method will correctly determine whether the forces on an object are balanced or unbalanced? A. Multiply the forces in the horizontal direction by the forces in the vertical direction. B.

Carbon is found in all known forms of life. Which statement best describes why carbon is uniquely suited to forming macromolecules such as those found in living organisms? A. Carbon forms large compounds that are not chemically reactive. B.

Name a type of asteroid and give a description.