A coolant consisting of a 50/50 mixture by volume of ethylene glycol and water

A coolant consisting of a 50/50 mixture by volume of ethylene glycol and water utilizes the
   
 a.
colligative properties of solutions.
 b.
freezing point elevation constant of water.
 c.
boiling point elevation constant of water.
 d.
boiling point depression constant of water.
 e.
a and c


A reaction intermediate is a species which
   
 a.
speeds up a reaction by lowering the activation energy.
 b.
slows down a reaction by raising the activation energy.
 c.
is always produced in the rate-determining step.
 d.
is always produced in an early step and consumed in a later step.
 e.
is always consumed in an early step and regenerated in a later step


An inhibitor is a molecule that

 a.
fits into the active site of an enzyme, but remains there instead of reacting and being released.
 b.
binds to a remote site on an enzyme, causing a change at the active site which renders the enzyme inefective.
 c.
renders an enzyme ineffective by denaturing it.
 d.
fits into the active site of an enzyme and reacts but is not released.
 e.
will not fit into the active site of an enzyme.