1. LINE GRAPHS: Line graphs are used when we compare two different number values. 1.1. Draw two graphs on the same set of axes s
1 answer:
A line graph can show information about two or more data sets and is useful to compare them. <em>In this example, you can compare the change in the heart rate of the two boys. You will find the graph in the attached files.</em>
As the statement says, the line graphs can be used to compare results.
It is basically a chart showing a line connecting many data points.
It must contain two axes
→ Y ax ⇒ Dependent variable ⇒ In this example, it is the <em>heart rate values</em>
→ X ax ⇒ Independent variable ⇒ In this example, it is the <em>number of times the measurements were taken. </em>
So in this example, data about the change in heart rate was taken from two boys, John and Thabo.
<em>Note about the data table: Since I do not know which value belongs to each boy, I drow a new table. You should use the data of your table to make a new graph. </em>
When making the graph, you will see the difference between the boys and how the heart rate fluctuated as measurements were taken.
You can make conclusions about your results that are easier to see in the graph.
For instance, according to the attached graph, we could say that,
- Thabo showed a more varying heart rate, with an extreme point at 1500 beats per minute.
- Jhon showed a more constant heart rate that fluctuated between 70 and 120, with an extreme point of 400 beats/min.
You can learn more about line graphs at
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Answer:
The structures are shown below.
Explanation:
When the acid reacts with water, it loses one proton (H⁺) and forms a base, which is the conjugate base of its acid.
The formal charge of an atom can be calculated by:
FC = X - (Y + Z/2)
Where X is the valence electrons of the neutral atom, Y is the unshared electrons, and Z is the shared electrons in the molecule.
a) When HCl deprotonates, it forms Cl⁻ as the conjugate base. The neutral atom Cl has 7 valence electrons (X), the ion has 8 unshared electrons (Y) and none shared electrons, so FC = -1 The structure is shown below in figure a.
b) When Hbr deprotonates it forms Br- as the conjugate base. The neutral atom has 7 valence electrons (X), the ion has 8 unshared electrons (Y) and none shared electrons, so FC = -1. The structure is shown below in figure b.
c) When CH3COOH loses a proton, it forms the conjugate base CH3COO⁻. The carbon as 4 valence electrons, hydrogen has 1 valence electron and oxygen has 6 valence electrons. The first carbon make simple bonds with each hydrogen and with the second carbon, and so, all the electrons are shared, and it has FC = 4 - (0 + 8/2) = 0, as so the hydrogens have FC = 1 - (0 + 2/2) = 0.
The second carbon does 1 simple bond with the first carbon, a double bond with one oxygen, and a simple bond with the other oxygen, and so doesn't have unshared electrons, and FC = 4 - (0 + 8/2) = 0.
The first oxygen does a double bond with the carbon, and so it has 4 unshared electrons, so FC = 6 - (4 + 4/2) = 0. The second oxygen does a simple bond with the carbon, and so has 5 unshared electrons, so FC = 6 - (5 + 2/2) = 0.
The structure is shown in figure c.
