Una muestra de gas de cloro ocupa un volumen de 146 ml a una presión de 726 mm Hg. ¿Cuál es la presión del gas (en mm Hg) si el volumen se reduce a temperatura constante a 100 ml?

The answer is b i think

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.