Answer:
Only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.
Explanation:
Whether the aqueous layer would be present on top or bottom, is decided by densities of the solvent.
Solvent which is less denser than water will be present as top layer in aqueous extraction and solvent which is more denser than water will be present as bottom layer.
Therefore,
a) Methanol is less dense than water, hence will be present as top layer in an aqueous layer.
b) Hexane is less dense than water, hence will be present as top layer in an aqueous layer.
c) Benzene is less dense than water, hence will be present as top layer in an aqueous extraction.
d) dichloromethane is more dense than water and hence will be present as bottom layer in aqueous extraction
e) diethyl ether is less dense and will be present as top layer in an aqueous layer.
So, only dichloromethane will be present as bottom layer and other given solvents will be present as top layer in an aqueous extraction.
C. Poor conductors of electricity is the correct answer. Metal is shiny Metal is malleable and they lose 1 electron in a chemical reaction.
Answer:
The answer is 4.28 moles
Explanation:
This is super easy okay, you won't forget this!
Basically mole ratios, we're just looking at the coefficients in front of the compounds, multiplying them, and dividing them as we see fit.
In this example, you can see how you need 2 moles of lithium bromide (LiBr) for the reaction, and 2 moles of lithium chloride (LiCl) will be produced.
Basically, the <u>molar ratio</u> is when you divide numbers and see how much of this do I have for that (if that makes sense).
So if you were to divide the 2 moles of LiBr / 2 moles of LiCl = 1. So we know that the mole ratio for LiBr to LiCl is 1:1 or 2:2, either or, it's the same thing.
SO THE BIG IDEA, if we have 4.28 moles of lithium bromide reacting, we should also have 4.28 moles of lithium chloride produced, BECAUSE the <u>mole ratio</u> is 1:1.
I hope this makes sense please tell me if it doesn't, I will try my best to explain a little more.
K = C + 273
600 = C + 273
C = 600 - 273
C = 327C