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OpenStudy (anonymous):
Need this quick! A solution of salt and water contains 75 grams of water per 150 milliliters of the solution. If 1 mole of water weighs 16 grams, _____ moles of water would be present in 30 milliliters of the solution. [Round off your answer to two decimal places]
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OpenStudy (anonymous):
Well, there's 75 grams H2O in 150 milliliters, and 30 milliliters is a 5th of the volume, so there would be one 5th as much H2O, which would be 15 grams. If 1 mole of water weighs 16 grams, then 15 grams of water corresponds to (15/16) moles.
OpenStudy (anonymous):
So .15 ?
OpenStudy (anonymous):
@stoopkid
OpenStudy (anonymous):
No, 15/16.
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