WEST NES Chemistry 306 Practice Questions - Washington National Evaluation Series Chemistry (306) Exam

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A student investigates whether increasing the surface area of calcium carbonate changes its reaction rate with hydrochloric acid. Which factor should be intentionally varied?

The particle size of the calcium carbonate The concentration of hydrochloric acid The total volume of acid used The temperature of the laboratory

Correct Answer:

The particle size of the calcium carbonate

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