SOLUTION: A substance in a chemical reaction is used up at a rate that is proportional to the
amount of the substance present at any time. If ½ of the substance is used up in 2
hours, h
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-> SOLUTION: A substance in a chemical reaction is used up at a rate that is proportional to the
amount of the substance present at any time. If ½ of the substance is used up in 2
hours, h
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Question 1187784: A substance in a chemical reaction is used up at a rate that is proportional to the
amount of the substance present at any time. If ½ of the substance is used up in 2
hours, how much of the substance is left at the end of 2 hours and 30 minutes? Answer by ikleyn(52925) (Show Source):
