Answer:
no it is a heterogeneous mixture because salt and pepper are not mixed uniformly.
I would have to say the best answer would be two
Factor that can be controlled changed or measured in an experiment.
The result of Rutherford's gold foil experiment was that most of the particles went straight through the foil without being deflected.
However, a few of the particles were deflected by relatively large angles.
The answer is 5.17 x 10^-1