Mathematics, 20.06.2020 03:57, ajayrose

Substance A decomposes at a rate proportional to the amount of A present. a) Write an equation relating A to the amount left of an initial amount Upper A 0 after time t. b) It is found that 18 lb of A will reduce to 9 lb in 4.2 hr. After how long will there be only 1 lb left?

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Substance A decomposes at a rate proportional to the amount of A present. a) Write an equation relat...