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2 years ago

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susan figure the slope of the line passing through the points (4,19) amd (7,28) to be 1/3. the teacher believes susan is wrong.

why?

1 answer:

melamori03 [73]2 years ago

7 0

For (x1,y1) and (x2,y2)
slope=(y2-y1)/(x2-x1)

(4,19)
(7,28)

slope=(28-19)/(7-4)=9/3=3/1=3
because math

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A second important result is that electrons will fill the lowest energy states available. This would seem to indicate that every

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Answer:

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Explanation:

1)<u> Principal quantum number, n = 2</u>

n is the principal quantum number and indicates the main energy level.

<u>2) Second quantum number, ℓ</u>

The second quantum number, ℓ, is named, Azimuthal quantum number.

The possible values of ℓ are from 0 to n - 1.

Hence, since n = 2, there are two possible values for ℓ: 0, and 1.

This gives you two shapes for the orbitals: 0 corresponds to "s" orbitals, and 1 corresponds to "p" orbitals.

<u>3) Third quantum number, mℓ</u>

The third quantum number, mℓ, is named magnetic quantum number.

The possible values for mℓ are from - ℓ to + ℓ.

Hence, the poosible values for mℓ when n = 2 are:

for ℓ = 0: mℓ = 0

for ℓ = 1, mℓ = -1, 0, or +1.

<u>4) Fourth quantum number, ms.</u>

This is the spin number and it can be either +1/2 or -1/2.

Therfore the full set of possible states (different quantum number for a given atom) for n = 2 is:

(2, 0, 0 +1/2)
(2, 0, 0, -1/2)
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(2, 1, 0, +1/2)
(2, 1, 0, -1/2)
(2, 1, 1, +1/2)
(2, 1, 1, -1/2)

That is a total of <u>8 different possible states</u>, which is the answer for the question.

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<u><em></em></u>

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2 years ago

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yaroslaw [1]

Answer:

Step-by-step explanation:

First expand the expression so you know the coefficients of x and y.

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2 years ago

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Answer:

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Step-by-step explanation:

Given;

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Make a sketch of the problem as follows;

↑

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If completed to form a right triangle by adding the hypotenuse side, we can calculate the height of the tree as follows;

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