How does increasing the temperature affect a reaction?
A. An increase in temperature increases the reaction rate.
B. An increase in temperature slows down the reaction.
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C. An increase in temperature lowers the reaction's activation energy.
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D. An increase in temperature changes equilibrjum concentrations.

A. An increase in temperature increases the reaction rate.

Explanation:because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

how to make a simple air condition

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8