Chemistry, 23.03.2021 04:20, shaloveywrighty5965
Caffeine (C8H10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in the solvent chloroform (CHCl3) has a concentration of 0.0500 molal, calculate (a) the percentage of caffeine by mass, (b) the mole fraction of caffeine in the solution.
Answers: 3
Chemistry, 22.06.2019 12:20, jessicasbss6840
Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.
Answers: 1
Chemistry, 22.06.2019 13:30, annanikherrera
If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion
Answers: 3
Chemistry, 22.06.2019 23:10, carmenguabaoql9kv
Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium. b)heavier than helium. c)the same weight as helium. d)dependent on the element that reacted with carbon.
Answers: 3
Caffeine (C8H10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in the solven...
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