The different types of motion
Answer:

Explanation:
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In this case, since a dilution process implies that the moles of the solute remain the same before and after the addition of diluting water, we can write:

Thus, since we know the volume and concentration of the initial sample, we compute the resulting concentration as shown below:

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I don’t know if I am right but I think it is symbol for the first one and the second one is formula.
To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons.
6.4*10^10 is the answer in scientific notation