We are given with the mass of Arsine (
The mass of arsine is 15g
there is a relation between moles, mass and molar mass of any compound which is
The molar mass of Arsine = atomic mass of As + 3X atomic mass of H
the molar mass of Arsine = 74.92 + 3X 1 = 77.92 g/mol
Let us calculate the moles as
1) chromatography- separation by inner molecular attractions.
2) distillation- separation by boiling point differences.
3) filtration- separation by particle size
4) crystallization- separation by solubility
B. False, some isotopes have short half-lives such as 8 days
To draw the Lewis structure of the polyatomic ion, you would have to add one electron to those in the structures of Cl, O, O and O.
Answer: Option A
<u>Explanation:</u>
It is a kind of representation of electrons present in valence shell of each element. For easy understanding of how the outermost electrons will be arranged for bonding purpose, Lewis structure is used.
As we know that carbon has an outermost electron number of 4. So 4 electrons are required as the electrons in the outermost shell of each carbon. But here only three electrons are there, so one electron need to be added in the Lewis structure of .