Answers LHS Physical Science Cumulative Exam — Cumulative examQuestion 19

19

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Cumulative Exam — Cumulative exam

Question 19 • LHS Physical Science

Which will decrease the rate of a reaction?

Answer

A

changing the temperature from 90ºC to 40ºC

B

adjusting the concentration from 30 ng to 60 ng

C

placing the substance in a smaller container

D

grinding the substance into a powder

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