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:

the solar system used to have much dust particles option no d

here is table 2-2:

country

percent of eligible voters that voted

rank

united states

44.9%

138

canada

60.1%

107

costa rica

84.6%

14

hungary

66.9%

82

japan

57.0%

118

egypt

27.7%

159

south africa

85.5%

10

ans is no, the data set cannot be plotted as a single circle graph