Chemistry, 11.09.2019 02:30 landanwithers
In this experiment, 0.070 g of caffeine is dissolved in 4.0ml of water. the caffeine is extracted from the aqueous solution three times with 2.0-ml portions of methylene chloride. calculate the total amount of caffeine that can be extracted into the three portions of methylene chloride (see technique12, section12.2). caffeine has a distribution coefcient of 4.6, between methylene chloride and water.
Answers: 3
Chemistry, 21.06.2019 23:20, anggar20
Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night. when he took it out, its new volume was 322 milliliters, but its pressure was the same. if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is kelvins.
Answers: 2
Chemistry, 22.06.2019 19:30, gracieisweird12
Use the periodic table to find the molar mass of each element. molar mass h = g/mol molar mass s = g/mol molar mass o = g/mol
Answers: 3
In this experiment, 0.070 g of caffeine is dissolved in 4.0ml of water. the caffeine is extracted fr...
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