Molecular Formula and Empirical Formula + Relative Molecular Mass and Relative Formula Mass Flashcards
1
Q
What is the molecular formula?
A
= tells us the elements in a molecule
= and the number of atoms of each element.
2
Q
What is the relative molecular mass?
A
= weighted mean mass of a molecule compared to 1/12th of the mass to carbon-12.
Mr.
= used for covalent molecules
3
Q
How do we calculate it?
A
= 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
4
Q
What is relative formula mass?
A
= giant structures
= calculated the same way as relative molecular mass
= use emperical formula