A chemical reaction converts a certain chemical into another chemical, and the rate at which the first chemical is converted is proportional to the amount of this chemical present at any time. At the end of two hours, 80 grams of the first chemical remain, while at the end of four hours, only 40 grams remain. How many grams of the first chemical were present initially?

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Use continuous computations, round off your final answers to two (2) decimal places. Input numerical values only, do not type the units, space or comma.
A chemical reaction converts a certain chemical
into another chemical, and the rate at which the
first chemical is converted is proportional to the
amount of this chemical present at any time. At
the end of two hours, 80 grams of the first
chemical remain, while at the end of four hours,
only 40 grams remain. How many grams of the
first chemical were present initially?
Transcribed Image Text:A chemical reaction converts a certain chemical into another chemical, and the rate at which the first chemical is converted is proportional to the amount of this chemical present at any time. At the end of two hours, 80 grams of the first chemical remain, while at the end of four hours, only 40 grams remain. How many grams of the first chemical were present initially?
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