6. A TLC analysis of a sample composed of o-xylene (1,2-dimethylbenzene), o-toluic acid (2-methylbenzoic acid), and o-cresol (2-methylphenol, or 1-hydroxy-2-methylbenzene) gave the plate below. Calculate the Rf values and match the three compounds to the three spots. Explain your reasoning.
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What is the relationship of air masses and the temperature of oceans?
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Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.
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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
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Chemistry, 22.06.2019 22:30
Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.
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6. A TLC analysis of a sample composed of o-xylene (1,2-dimethylbenzene), o-toluic acid (2-methylben...
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