Answer:
The heat from the Earth's cores radioactive process makes the lithospheric plates move sometimes away or toward each other.
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Answer:
The usual way of converting black oxide to red oxide involves treating the black oxide with sulphuric acid and then roasting the intermediate product thus formed. lt is known that the amount of acid can be considerably less than the stoichiometric amount needed to convert all the black oxide to a sulphate.
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Answer:
Explanation:
First of all we need to find the amount of atoms per volume (m³). We can do this using the density and the molar mass.
Now, the fraction of vacancies is equal to the N(v)/N ratio.
- N(v) is the number of vacancies
- N is the number of atoms per volume calculated above.
Therefore:
The fraction of vacancies at 600 °C will be:
I hope it helps you!
The answer to 12 is that she would continue moving until something stopped her, i.e gravity
the answer to 13 is gravitational force. the gravitational force is stopping the chair from moving by pulling it down creating friction