The chemical formula of a covalent molecular substance gives the number of atoms per molecule. The formula of a covalent network or ionic compound gives the simplest ratio of atoms/ions in the ...

[Trivia]Click here to find out if pure water exists.[/Trivia] [Question]NaCl[/Question] [Answer]Blue vitriol[/Answer] [Answer-Correct]Common salt[/Answer-Correct ...

if you know the relative mass formula (M r) of the compound. Add up the atomic masses of the atoms in the empirical formula. The empirical formula of a hydrocarbon is CH 2 and its M r is 42.