Select the correct reason why a pencil and not an ink pen should be used to mark a thin‑layer chromatography (tlc) plate. the pencil graphite will interact with organic compounds. the ink will trap the compounds in the samples and not allow them to migrate up the plate. the mobile phase can dissolve the ink and move it up the plate. ink can evaporate during the development of the plate.
Answers: 1
Chemistry, 22.06.2019 13:00
Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?
Answers: 1
Chemistry, 22.06.2019 13:50
What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.
Answers: 2
Select the correct reason why a pencil and not an ink pen should be used to mark a thin‑layer chroma...
Mathematics, 22.03.2021 07:20
English, 22.03.2021 07:20
History, 22.03.2021 07:20
Computers and Technology, 22.03.2021 07:20
Mathematics, 22.03.2021 07:20
Geography, 22.03.2021 07:30
Mathematics, 22.03.2021 07:30
English, 22.03.2021 07:30
English, 22.03.2021 07:30
Mathematics, 22.03.2021 07:30
Mathematics, 22.03.2021 07:30
English, 22.03.2021 07:30
English, 22.03.2021 07:30