During an experiment a student measured the temperature of water while it boiled in a pot on a stove. The temperature of the water stayed at 100°C during the entire time that the water was boiling.
Answers
Answer:
The temperature of the water stayed at because the temperature of a pure water does not increase at its boiling point,
. This is due to latent heat of vaporisation.
Explanation:
During a change of state of a substance, the temperature does not change due to latent heat of the substance. Latent heat is the amount of heat required to convert a unit mass of a substance from one state to another without a change in its temperature. There are two types of latent heat, latent heat of fusion anf latent heat of vaporisation.
So during the experiment, the water got to its boiling point and continues to boil at this constant temperature until it would change completely to steam at that temperature. After the conversion process, the temperature begins to increase.
The latent heat of vaporisation came into action during the process of boiling the water at constant temperature. That's why the temperature of the water did not increase even after reaching its boiling point ( ).
Answer:
c,interpretation of the data
Explanation:
A good scientific explanation needs to be based on both data collected in an investigation and on the ability to interpret what the data means.
Normally, adding heat energy increases the temperature of a substance. However, during a phase change, the temperature of the substance stays constant. This happens because the heat energy is being used to change the phase of the matter instead of the temperature.
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According to most scientists, cold fusion will not be a practical source of energy on Earth. Option 1 is correct.
Cold fusion is a hypothetical type of nuclear fusion that would occur at or near room temperature. If it were possible to achieve cold fusion, it would be a virtually unlimited source of energy. However, there is no scientific consensus that cold fusion is actually possible, and there have been many failed attempts to reproduce the results of early experiments.
Most scientists believe that cold fusion will not be a practical source of energy is that it would require very high pressures and temperatures to initiate the fusion reaction. These conditions are difficult to achieve and maintain in a laboratory setting, and it is not clear how they could be scaled up to a commercial level.
Another problem with cold fusion is that it would likely be very expensive to produce. The materials and equipment needed to create the high pressures and temperatures would be very costly, and the energy output would probably be relatively low. Option 1 is correct.
The complete question is
According to most scientists, cold fusion
1. Will not be a practical source of energy on Earth
2. Would be a practical source of energy on Earth if it were less expensive
3. Will be a practical source of energy on Earth within the next few decades
4. Will always continue to be a practical source of energy on Earth
To know more about the Scientists, here
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will not be a practical source of energy on Earth
B. Composition of a substance is the same.
C. A completely new substance is formed.
D. An easily reversible process has taken place.
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Temperature increases and pressure decreases.
Temperature increases and pressure increases.
Temperature decreases and pressure increases.
Temperature decreases and pressure decreases.
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Answer:
c
Explanation:
Answer:
option 2
Explanation:
temperature decreases as you are further away from the sun and less thermak energy is reaching you. the pressure increases as more water is above you.
(pls give brainliest T.T)
Answers
The amount of energy when it is transformed from one form to another is still the same or equal.
The law of conservation of energy states energy cannot be destroyed nor created. Instead, it just transform from one form to another.
There are different types of energy. They are:
1) Chemical Energy
2) Mechanical Energy
a) Kinetic energy
b) Potential energy
i. gravitational potential energy
ii. elastic potential energy
3) Electrical Energy
4) Nuclear Energy
Chemical Energy can transform to thermal energy or electrical energy.
Mechanical Energy can transform to electrical energy
Answer:
what they said
Explanation:
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Gravitational potential energy is energy of an object because of its height above a surface.
Elastic potential energy is energy stored in a compressed or stretched object.
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Answer:
Tincture o iodine.
Explanation:
If a solute is dissolved in a solution that is not water for example, alcohol, ether, carbon disulphide, Carbon tetrachloride and many other carbon based liquids, the resulting solution is classified as a non aqueous solution.
An example of such a solution is tincture of iodine made by dissolving in 1 liter alcohol.
The molarity of iodine is approximately 0.53M
The solution is largely used as a sore disinfectant.
Answer: B
Explanation: on Edg