Find the density of a handful of sand having a mass of 208g and it displaces a volume of 80ml of water

So to solve this answer you need the formula density = mass / volume. D = 208 g / 80 mL = 2.60 g/mL

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.