What is the rate constant of a first-order reaction that takes 490 secondsseconds for the reactant concentration to drop to half of its initial value

Explain how the integumentary system plays a crucial role in the ability to maintain homeoestasis

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

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