A joule is defined as the amount of energy transferred to an object when a force of one newton acts on the object in the direction of its motion through a distance of one meter (1 newton meter or Nm)
Use M x V = M' x V'
0.300 x V = 0.100 x 250
V = .......... ml
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Rutherford, through his gold-foil experiment, discovered that the nucleus is a small core of protons and neutrons making up most of the atom’s mass.
the answer is: Atomic number
