(a) If the average molecular mass of compounds in food is50.0 g, how many molecules are there in 1.00 kg of food? (b)How many ion pairs are created in 1.00 kg of food, if it isexposed to 1000 Sv and it takes 32.0 eV to create an ionpair? (c) Find the ratio of ion pairs to molecules. (d) If theseion pairs recombine into a distribution of 2000 newcompounds, how many parts per billion is each?

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Rutherford's scattering experiment

Rutherford’s scattering experiment is also known as the gold foil experiment. This experiment disproved the plum pudding model of J.J. Thomson. In a gold foil experiment, high-energy alpha particles are made to strike a thin gold foil. The scattered alpha particles are detected using a detector. This experiment showed that the positive charge of the atom is at the center. Most of the atom’s mass is also confined to a small volume at the center. This region is known as the nucleus of the atom.