Chemical formula of tetraphosphurus octasulfide

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.