What is the correct formula for Elementium Nitride?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton             rosalind franklin marie curie             gertrude b. elion ada yonath             henry cavendish robert boyle             antoine lavoisier mario j. molina             svante arrhenius