Determine the amount of both hydrogen and oxygen in a 500ml sample of water.

There would be about 1.67 x 10^25 oxygen atoms and about 3.34 x 10^25 hydrogen atoms.

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

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