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13.03.2021 •
Chemistry
A student needs 7.6 liters of a 0.18 molar solution for an experiment. How many grams of solute does the student need if the molar mass of the solute is 22.71 g/mol? Round your answer to the nearest 0.01
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Ответ:
31.07 g
Explanation:
First we calculate how many moles of solute would there be in 7.6 liters of a 0.18 molar solution, using the definition of molarity:
molarity = moles / volume0.18 M = moles / 7.6 Lmoles = 1.368 molNow we calculate the mass of 1.368 moles of solute, using the given molar mass:
1.368 mol * 22.71 g/mol = 31.07 gОтвет:
if on edge it's D
Explanation: