The material a certain item is made from has a lot of spaces within it that trap air. Thermal energy can not travel through air as easily as it can through solid materials. This makes the item a... thermal energy

thermal insulator

electrical conductor

thermal conductor

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.

C: 6.94 is the correct answer

Im here for points, sorry i dont have the answer ; /