During the production of traditional beer, glucose is converted to ethanol and carbon dioxide: C₆H₁₂O₆ → (enzymes) 2C₂H₅OH + 2CO₂. (Ar: C 12, H 1, O 16; Avogadro's number = 6.02 × 10²³)

1. aName this process. [1]
2. bExplain why the temperature of the reaction is maintained around 40 °C. [1]
3. cCalculate the mass of ethanol produced from 9.0 g of glucose. [2]
4. dCalculate the number of molecules of ethanol produced. [2]
5. eDescribe the chemical test to show that the gas produced is carbon dioxide. [2]

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