Solve.In a chemical reaction, substance A decomposes at a rate proportional to the amount of A present. It is found that 10 g of A will reduce to 5 g in 3.5 hours. After how long will there be only 1 g left?
A. 8.8 hours
B. 11.6 hours
C. 15.8 hours
D. 8.1 hours
Answer: B
Mathematics
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