Answer:
pauli exclusion principle states that no two electrons in the same orbital can have the same spin.
Explanation:
this means you can't have 2 up arrows or 2 down arrows in your box
The question is already answered.
Its true, By definition, an atom is electrically neutral<span> it has the same number of protons as it does electrons, plus some number of neutrons depending on the isotope</span>
The question has mentioned three solvents: water, ethanol, and diethyl ether. Water is miscible with ethanol but not diethyl ether. As a result, it would be possible to separate a mixture of water and diethyl ether with a separatory funnel but not a mixture of water and ethanol using such techniques.
Substance X dissolves well in diethyl ether but not in water; substance Y dissolves well in water but not in diethyl ether. As a result, the two components of this mixture would end up in different layers when dissolved in a mixture of water and diethyl ether- which separate into two layers itself. One would expect to find
- a solution mostly of substance X in the diethyl ether layer, and
- a solution mostly of substance Y in the water layer.
Given the fact that diethyl ether has a density less than that of water (
as opposed to 
,) it would form the upper layer of its mixture with water. Separate the mixture with a separatory funnel. The question stated that both X and Y are under the solid state while the two solvents are both liquidsm implying that the boiling points of both species are higher than that of their respective solvent. Therefore heat the solutions till all solvent had evaporated to obtain X and Y.
Answer:
to avoid iodine vapor from escaping.
Explanation:
This question is all about an experimental work on the determination of the distribution of iodine between waters and cyclohexane. To understand this question one has to understand the topic "Equilibrium" very well.
One important thing that must be noted in this question is for us to remember that water and cyclohexane are two immiscible liquids. So, when Iodine is added to the two solvents, the iodine dissolves in both water and cyclohexane to certain rate ands then to an equilibrium which is;
Kd = I₂[Cyclohexane]/ I₂[water]. ----------------------------------------[**].
There is a release of I⁻¹ From the added potassium iodide which helps in making sure that the iodine vapor does not escape. Thus, forming a tri-iodide ion.
