Question: 8. In chemical reaction, a certain compound changes into another compound at a rate proportional to the unchanged amount. There is 100 grams of the

8. In chemical reaction, a certain compound changes into another compound

8. In chemical reaction, a certain compound changes into another compound at a rate proportional to the unchanged amount. There is 100 grams of the original compound initially and 65 grams after 2 hours. When will 25% of the compound be changed

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