Answer:
Bar graphs have an x-axis and a y-axis like most bar graphs, like the one above, the x-axis runs horizontally (flat).
Sometimes bar graphs are made so that the bars are sidewise like in the graph below. Then the x-axis has numbers representing different time periods or names of things being compared.
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-Hops
The molecular formula is;
C4H10N2
I hope it was helpful
Simple 6L of air times the .21L of O2 = 1.26
a) Mg is oxidized and O2 is reduced
b) Zn is oxidized while Pb(NO3)2 is reduced.
<h3>Oxidation and reduction</h3>
Oxidation is defined as:
- loss of electrons
- removal of hydrogen
- addition of oxygen
- increase in oxidation number
- removal of electropositive elements
Reduction is defined as:
- gains of electrons
- addition of hydrogen
- removal of oxygen
- decrease in oxidation number
- addition of electropositive elements
Looking at the first reaction, the Mg atom gains oxygen to become MgO. This means that Mg is oxidized. The oxidizing agent is O2. At the same time, O2 is being reduced and the reducing agent is Mg.
For the second reaction, the oxidation number of Pb is reduced from +2 to 0. Thus, Pb has been reduced by Zn while Zn itself has been oxidized. The reducing agent here is Zn while the oxidizing agent is Pb(NO3)2.
More on oxidation and reduction can be found here: brainly.com/question/13699873
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