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wolfgirl4762
29.06.2021 •
Chemistry
A solution is made using 200.0 mL of methanol (density 0.7920 g/mL) and 693.1 mL of water (density 1.000 g/mL). What is the mass percent of the methanol
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Ответ:
18.6% by mass MtOH
Explanation:
Solution composition = 200ml MtOH + 693.1 ml H₂O
= (200ml MtOH)(0.792g MtOH/ml MtOH) + (693.1 ml H₂O)(1.000g H₂O/ 1 ml H₂O)
= 158.4 g MtOH + 693.1 g H₂O = 851.5 g
mass% MtOH = (158.4g MtOH/851.5g Solution) x 100% = 18.6% by mass MtOH
Ответ:
The higher animals in the food chain would probably not survive.