Calculate the mass of pure acetic acid
A solution is 40% acetic acid by mass. The density of this solution is 1.049 g/mL. Calculate the mass of pure acetic acid in 140mL of this solution at 20C.
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Lactose is a sugar most commonly found in milk and is made up of carbon, hydrogen and oxygen. After analyzing a sample of it there was found to be 42.1 % of carbon, 6.46% of hydrogen and 51.4% of oxygen by mass.
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