Answer:
It is an exothermic reaction.
Explanation:
Why? Since the kJ is added to the product side, we know that this is an exothermic reaction since it is releasing heat. Endothermic reactions absorb heat and thus it would be represented on the products side.
To represent this exothermic reaction we would draw a curve starting mid graph then it goes up and then dropsdown. In other words, it looks downhill since it's releasing heat wheras an edothermic rxn, it is gaining heat, thus it looks like it is going upwards.
B) The element is most likely from Group 2A or 3A and in period 2 or 3.
C) The element is most likely from Group 4A or 5A and in period 4 or 5.
D) The element is most likely from Group 6A or 7A and in period 6 or 7
Answer:
The list of answer choices is wrong.
The correct list is:
A) The element is most likely from Group 1A or 2A and in period 1 or 2.
B) The element is most likely from Group 2A or 3A and in period 6 or 7.
C) The element is most likely from Group 4A or 5A and in period 4 or 5.
D) The element is most likely from Group 6A or 7A and in period 2 or 3.
The correct answer is:
Explanation:
The ionization energy increases from left to right on the periodic table. So the elements with higer ionization energies are in the right end of the table. The right most columns are 6A (16) and 7A(17). The column 8A (18) which is that of the noble gases is not normally taken into acccount for this predictions because noble gases are nearly inert.
Hence, the fact that the statement indicates high ionization energy suggests that the element is most likely from group 6A or 7A.
The atomic radius increases from top to bottom, so the smallest elements are in the top rows, which is the periods 1, 2, or 3. The period 1 only has two elements, hydrogen in group 1 and helium in group 8A, so they are not considered in the choices. Thus, that leaves you with the periods 2 or 3.
Adding the two considerations, the conclusion is that the element is most likely from group 6A or 7A and in period 2 or 3.
Answer:
Explanation:
The answer is A) The element is most likely from Group 1A or 2A and in period 1 or 2
Answer:
ONE: spoon/ catapult
TWO: ball holder
THREE: the joint
FOUR: the rotater
FIVE: I think it is a lever that picks up the big spoon/ catapult
SIX: I don't know the chapter
A particle diagram showing the composition of air would represent various gases like nitrogen, oxygen, water vapor, and carbon dioxide as spheres of different colors. The proportions between these gases would be shown by having a majority of nitrogen and oxygen spheres as they make up most of our atmosphere. The diagram may also include symbols for dust particles and particulate matter.
A particle diagram to illustrate the composition of air would visually represent the mixture of gases that comprise our atmosphere. Primarily, the atmospheric mix includes nitrogen (N₂; 78.6 percent), oxygen (O₂; 20.9 percent), water vapor (H₂O; 0.5 percent), and carbon dioxide (CO₂; 0.04 percent).
Each of these gases exist as molecules, with nitrogen and oxygen being diatomic. In other words, their molecules consist of two atoms.
In such a diagram, each type of atom would be represented as a sphere of a different color, for instance, nitrogen atoms might be blue, oxygen red, hydrogen white, and carbon grey.
The proportions would be represented by having a larger number of nitrogen and oxygen spheres compared to water vapor and carbon dioxide.
Furthermore, there might be additional entities in the diagram to represent dust particles or other environmental particulate matter suspended in the air. This allows us to get a qualitative understanding of the composition of Earth's atmosphere and mechanisms that drive gas exchange.
Learn more about composition of air here:
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