(c) The rate at which a certain compound, CPD, hydrolyses in water is proportional to the amount of the compound present, with 40% of an initial sample of CPD remaining after 30 minutes. (i) Let e(t)...

Extracted text: (c) The rate at which a certain compound, CPD, hydrolyses in water is proportional to the amount of the compound present, with 40% of an initial sample of CPD remaining after 30 minutes. (i) Let e(t) represent the amount of CPD present after t hours and use the law of exponential change to find an expression for e(t). (ii) How much of a 750g sample of CPD will remain after 5 hours? (iii) How long will it take until only 100g of a 750g sample of CPD remains?