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HOT 1 giờ qua

1. What chemical reactions are involved in the working of fireworks? (0)
2. What are the chemical principles behind the fermentation process in making bread? (0)
3. Discuss the chemical reactions that take place in an internal combustion engine. (0)
4. How do chemical reactions power batteries and fuel cells? (0)
5. Explain the role of pH in everyday products like shampoos and skin care products. (0)