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12 moles of glucose are needed to make 1 mole of ethanol. Therefore, 17.5 moles of ethanol are equivalent to 12 x 17.5 moles, or 8.5 moles of glucose. Thus, there were 8.5 moles of glucose at the start.
The molecular weight of ethanol is 46.069 amu. The molar mass of ethanol is 46.069 g/mol because it has 2 mol of carbon atoms (2 12.011 g), 6 mol of hydrogen atoms (6 1.0079 g), and 1 mol of oxygen atoms (1 15.9994 g) in each mole. Hydrogen peroxide and gluconic acid are produced when the enzyme glucose oxidase interacts with glucose, water, and oxygen. The chromogen can then be oxidized with hydrogen peroxide, and the amount of oxygen used can be calculated to determine how much hydrogen peroxide is needed.
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