Astudent spots an unknown sample on a tlc plate. after developing the plate in a 50: 50 mixture of hexane/ethyl acetate, the student sees a single spot with an rf of 0.40. does this indicate the unknown sample is a pure compound? what else could the student do to verify whether the sample is pure or a mixture?
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Chemistry, 22.06.2019 10:10
What shape would a molecule with two bound groups and two lone pairs have?
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The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?
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If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution
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Chemistry, 23.06.2019 00:20
How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal
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Astudent spots an unknown sample on a tlc plate. after developing the plate in a 50: 50 mixture of h...
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