Calculate the mass in grams of a single atom C¹²

What’s the percent by mass of carbon in c10h14n2

Calculate the number of molecules present in 0.750 mol of mgo.

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.