An unscientific device for locating oil or minerals; a divining rod.
Answer:
D. The kinetic energy is greater after a substance changes from a
solid to a liquid
Explanation:
During a phase change from solid to liquid, the particles making up the mobile becomes more mobile and as a result there is an increase in kinetic energy of the system.
- Kinetic energy is the energy accrued due to the motion of a body.
- In a melting process where solids turn to liquid, there is an increase in kinetic energy.
- When randomness of a system increase, kinetic energy also increases.
- From liquid to gas and gas to plasma increases kinetic energy.
- In the other way round, the kinetic energy reduces.
Answer:
different , same, same, same
Answer:
<h3>The answer is 0.075 moles</h3>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>0.075 moles</h3>
Hope this helps you
Answer:
A 50-mL volumetric cylinder with 0.1-mL accuracy scale should be used for this purpose since three significant figures of accuracy are required.
Explanation:
Hello,
A 50-mL volumetric cylinder with 0.1-mL accuracy scale should be used for this purpose since three significant figures of accuracy are required.
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