2) Select which of the following pieces of laboratory experiment could be used when measuring out 20.00 mL CoCl2: 150-mL beaker 400-mL beaker 250-mL Erlenmeyer flask 50-mL buret 50-ml graduated cylinder 100-mL graduated cylinder
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
![Once you have answered this question, how would your answer have changed if the am
of CoCl, to be measured is 20.0 mL.
AP Question // Q 3) A stock solution of 0.100 M cobalt (II) chloride is used to create
several solutions, indicated in the data table below:
Sample
Volume CoCl2 (mL)
Volume H20 (mL)
1
20.00
15.00
10,00
12.00
10.00
4.
5.00
25.00
Calculate the concentration of cobalt(II) chloride in each sample.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa60bf688-fc7c-4a1b-9f84-c733c16679e8%2Fe967c117-a310-4dba-871b-35d18d785e00%2F1fj2sm_processed.jpeg&w=3840&q=75)
![AP Question I/Q 1) A student has a mixture containing three different organic
substances. The Lewis diagrams of the substances are below:
H.
H.
H
H
H-
Ö-H
H-C
H.
H
H
H
H.
n-butanol
ethyl chloride
H.
H.
H.
H-
H H
H.
H.
n-propylamine
a. If the mixture is dabbed onto chromatography paper that was then placed into a polar
solvent, rank the R, values for each component of the mixture from high to low after
the solvent has saturated the paper. Justify your answer.
b. If the mixture is poured into a chromatography column and then eluted with a very
nonpolar substance, which component of the mixture would leave the column first,
and why?
2) Select which of the following pieces of laboratory experiment could be used
when measuring out 20.00 mL CoCl;:
150-mL beaker
400-mL beaker
250-mL Erlenmeyer flask
50-mL buret
50-mL graduated cylinder
100-mL graduated cylinder](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa60bf688-fc7c-4a1b-9f84-c733c16679e8%2Fe967c117-a310-4dba-871b-35d18d785e00%2Fprz8sbh_processed.jpeg&w=3840&q=75)
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