Explain why a basketball doesn’t bounce the same height each time you drop it.
2 answers:
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Answer:
Formal charge for the first resonance structure of NO₂; first Oxygen = 0, N = +1, second Oxygen = -1
Formal charge for the second resonance structure of NO₂; first Oxygen = -1, N = +1, second Oxygen = 0
Explanation:
The formal charge of an atom in a molecule is the assumed charge the atom would have if the electrons in the bonds are redistributed evenly between the atoms.
Formal charge = valence electrons - (non-bonding electrons) - (bonding electrons / 2).
For NO₂ molecule, the formal charges for the atoms are as follows;
First Oxygen atom = 6 - 4 - 4/2 = 0
For Nitrogen = 5 - 1 - 6/2 = +1
For the second Oxygen atom = 6 - 6 - 2/2 = -1.
Overall charge = 0 + (+1) + (-1) = 0
For the second resonance structure,
First Oxygen atom = 6 - 6 - 2/2 = -1
For Nitrogen = 5 - 1 - 6/2 = +1
For the second Oxygen atom = 6 - 4 - 4/2 = 0
Overall charge = (-1) + (+1) + (0) = 0
Note: Where resonance structures for atoms or ions exist, the formal charges of each of the respective atoms or ions are calculated according.
Answer:
a. at either A or B
Explanation:
Kinetic energy may be defined as the energy of the system or an object which is due to its velocity of the object it possess.
In the context, an object having mass is attached to spring which is vertical and the object moves up and down due to spring effect between points A and B. Now these points A and B are the extreme points after which the object bounces back.
At point A and B, the velocity of the object becomes zero and hence the kinetic energy of a body varies directly proportional to its velocity.
i.e. Kinetic energy