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What are the most popular chemistry questions?
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1. How do you convert from Celsius to Fahrenheit?
2. What is the boiling point of water at sea level?
3. What is the atomic number of carbon?
4. What is the formula for water?
5. Why does a flame have a yellow color?
6. What is the chemical symbol for hydrogen?
7. What is the molecular formula for ethanol?
8. What is the atomic weight of nitrogen?
9. What is the atomic number of oxygen?
10. What is the pH of a lemon?