Chemistry, 23.10.2019 19:30 relexbuenaventura
Atlc plate was run in 1: 1 ethyl acetate and hexane, but when developed the plate only showed baseline spots. what change could be made to get the spot(s) to move further up the plate?
-spot a new plate and run again in the same solvent system
-spot a new plate and run in neat hexane
-spot a new plate and run in 1: 2 ethyl acetate/hexane
-spot a new plate and run in 2: 1 ethyl acetate/hexane
Answers: 2
Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
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Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
Answers: 1
Atlc plate was run in 1: 1 ethyl acetate and hexane, but when developed the plate only showed baseli...
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