Please answer with explanation. Thank you very much 4ss 5. A certain substance follows a first-order…

Please answer with explanation. Thank you very
much

4ss 5. A certain substance follows a first-order decomposition. It is found that 50% of the original substance decomposed after 8.75 hours. (a) How much additional time will it take for 99.9% of the initial substance to have decomposed? (b) How much time is required for the extent of the decomposition to go from 99.9% to 99.99%?