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Romashka [77]
4 years ago
9

Explain how the energy of a toy car is transformed as it slides down a ramp. Give evidence that the energy of the car remains th

e same at all points on the ramp. (30 points)
Chemistry
1 answer:
Sindrei [870]4 years ago
4 0

Answer:

As the car starts to slide down the ramp, it is kinetic energy and when it's on the top of the ramp,  it is potential energy. We can see that the energy is now being transferred through the car and ramp.

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Why melting point of Fe in blast furnace is lower than ellingham?
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Answer:

Because they are different oxides.

Explanation:

In both processes they are involve Iron Oxides, but in the case of Ellingham diagrams, it is consider the Iron in combination with oxygen to form FeO, so the melting point is around 1600  ºC. In the case of blast furnace, the Fe that is present in the ores, are primary the hematite (Fe2O3) and the magnetite (Fe3O4).

6 0
3 years ago
Give two possible sets of four quantum numbers for the electron in hydrogen when it is in its lowest energy state.
konstantin123 [22]

Answer:

Explanation:

The electron in the lowest energy state will be found in 1 s energy level.

set of 4 possible quantum numbers

Principal quantum no : n = 1 ,

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set of other quantum nos

Principal quantum no : n = 1 ,

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Magnetic quantum no m = 0

Spin quantum no  s = - 1/2

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3 years ago
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Answer:

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Please select the best answer from the choices provided

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2 years ago
Use the periodic table to determine the electron configuration for iodine (i). express your answer in condensed form.
Dovator [93]
Iodine electron configuration is:

1S^2 2S^2 2P^6 3S^2 3P^6 4S^2 3d^10 4P^6 5S^2 4d^10  5P^5
when Krypton is the noble gas in the row above iodine in the periodic table,
we can change 1S^2  2S^2 2P^6 3S^2 3P^6 4S^2 3d^10 4P^6 by the symbol
[Kr] of Krypton.

So we can write the electron configuration of Iodine:
[Kr] 5S^2 4d^10 5P^5

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