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mariabarcenas6807
31.08.2019 •
Chemistry
25 g of ethyl alcohol is dissolved in 100 ml of water (density = 0.3 at 20 oc). what is the % w/w for the ethyl alcohol in the resulting solution?
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Ответ:
Mass of solution = 100 mL (0.99993 g/mL) water + 25 g EtOH
Mass of solution = 124.993 g solution
%w/w = 25 g / 124.993 g x100
%w/w = 20% of EtOH
Ответ:
D
Step-by-step explanation: