The only explanation, Rutherford suggested in 1911, was that the alpha particles were being scattered by a large amount of positive charge concentrated in a very small space at the center of the gold atom.
C. 14
you would subtract the mass number from the protons or the atomic number because in order to find the mass number you would add the protons and neutrons :)
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Answer:
I'm very sure it's thermal energy.
Explanation:
Should be :
Lead Sulfate Tetrahydrate