Chemistry, 20.12.2019 20:31 Brainly264
Suppose caffeine has a partition coefficient of 2.5 between dichloromethane and water (2.5/1 = dichloromethane/water). you are given a solution of 10 grams of caffeine dissolved in 100 ml water. you extract your caffeine solution 1 x 100 ml dichloromethane, and evaporate your dichloromethane layer. how much caffeine would you expect to isolate? a) 8.0 grams b) 7.5 grams c) 7.1 grams d) 6.5 grams e) 2.9 grams
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Chemistry, 21.06.2019 20:30
Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other
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Chemistry, 22.06.2019 20:30
The activation energy for the reaction no2(g)+co2(g)ā¶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is Ī“h = -100 kj/mol . what is the activation energy for the reverse reaction?
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Chemistry, 22.06.2019 23:00
In which region is the substance in both the solid phase and the liquid phase? 1 2. 3 4 mark this and return save and exit next
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Chemistry, 23.06.2019 03:30
Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral
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Suppose caffeine has a partition coefficient of 2.5 between dichloromethane and water (2.5/1 = dichl...
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