Chemistry, 08.11.2019 20:31 bobjill1609
What does the period number of an atom indicate? a. period numbers are equal to the number of valence electrons in an atom. b. period numbers are equal to the number of orbital rings in an atom. c. period numbers are equal to the number of protons in an atom. d. period numbers are equal to the size of an atom.
Answers: 1
Chemistry, 22.06.2019 06:00
Match the name of the following compound: mgso4 · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate
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Chemistry, 22.06.2019 17:10
)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.
Answers: 1
Chemistry, 22.06.2019 21:00
Once similarity and one difference between a mixture of elements and a mixture of compounds
Answers: 3
What does the period number of an atom indicate? a. period numbers are equal to the number of valen...
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