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adelina 88 [10]
3 years ago
8

How is energy transferred during convection?

Chemistry
2 answers:
Doss [256]3 years ago
7 0

Answer:

The convection is a process by which heat energy can be transferred from one place to another through a medium. This process takes place in the liquid and air medium.

This process occurs in the atmosphere and in the mantle portion of the earth.

In the atmospheric region, the land area gets heated up due to the absorption of incoming solar radiation, as a result of which the air near the ground surface is heated up and becomes warm and less dense. This warm air then rises up into the upper portion carrying the heat energy from the lower region to the upper region. As the air rises upward, it cools down because of the lowering temperature and eventually falls back to the lower portion. This results in the formation of convection cells.

Similarly, in the layer of the mantle, convection currents are formed that carry the heat energy from the core of the earth towards the surface.

This is how energy is transferred by the process of conduction.

Natalija [7]3 years ago
4 0

The field of energy is wide and interesting due to it can be expressed by differents way.

The thermal energy is associated like internal energy of the atoms or molecules of a substance.  The transfer of thermal energy as heat can take place via convection.

Convection via is the transfer of thermal energy due to the motion of the substance that contains the thermal energy.  

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How many moles of copper are needed to react with sulfur to produce 0.25 moles Ol
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Answer:

                       0.50 moles of Cu

Explanation:

                    The balanced chemical equation for given synthetic reaction is,

                                          2 Cu + S → Cu₂S

According to balance chemical equation,

                  1 mole of Cu₂S is produced by  =  2 moles of Cu

So,

          0.25 moles of Cu₂S will be produced by  =  X moles of Cu

Solving for X,

                      X  =  0.25 mol × 2 mol /  1 mol

                      X  =  0.50 moles of Cu

Hence, as the molar ratio of Cu to Cu₂S is 2:1 hence, to produce 0.25 moles of Cu₂S we will need 0.50 moles of Cu.

6 0
3 years ago
Is sand biotic or abiotic
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Erosion
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Answer:

increase

Explanation:

Let's suppose we have a sample of air in a closed container. We heat the container and we want to predict what would happen to the pressure.

According to Gay-Lussac's law, the pressure of a gas is directly proportional to its absolute temperature.

Thus, if we increased the temperature of the air by heating it, its pressure would increase.

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5 0
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Answer:

Na ·

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Hello!

In this case, since the Lewis dot structure of any element illustrates the number of valence electrons at the outer shell; we can set up the electron configuration of sodium to obtain:

Na^1^1\rightarrow 1s^2,2s^2,2p^6,3s^1

We can see there is only one valence electron, for that reason the Lewis dot structure is:

Na ·

Whereas the dot represents the valence electron.

Best regards!

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