Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the concentration of reactants will increase a. how often they come in contact b. the amount of energy they have c. both the amount of energy and how often they come into contact d. neither the amount of energy nor how often they come in contact

option A. How often they come in contact

Explanation:

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.