Molecular Formula and Empirical Formula + Relative Molecular Mass and Relative Formula Mass

Question 1

What is the molecular formula?

Answer 1

= tells us the elements in a molecule
= and the number of atoms of each element.

Question 2

What is the relative molecular mass?

Answer 2

= weighted mean mass of a molecule compared to 1/12th of the mass to carbon-12.
Mr.
= used for covalent molecules

Question 3

How do we calculate it?

Answer 3

= add up all of the relative atomic masses of the atoms in a molecule
= do not use big numbers
= relative molecular mass applies to 1 molecule

Question 4

What is relative formula mass?

Answer 4

= giant structures
= calculated the same way as relative molecular mass
= use emperical formula