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Calculate how many moles of ethanol are present?
How many moles of ethanol are present in 750 ml of wine is 12.5% alcohol volume (the density is equal to 0.94 g ml-1, what is the concentration of ethanol in L mol-1? Thanks ..
100 ml of wine contains 12.5ml of alcohol by volume. 750ml ----------------------- 12.5 * 750 100 which equals 93.75ml ... Now, the density is 94 g / ml, means that it is equal to 1 ml, 94 g of alcohol ...... Now 93.75ml contain alcohol, equal to 94 * 93.75 .... 88.125g moles and alcohol is not equal to 88,125 46 which equals 1.915moles
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