Empirical Formula Flashcards
1
Q
What is the empirical formula?
A
The simplest whole number ratio of elements in a compound
2
Q
What can the empirical formula be calculated from?
A
%mass or mass
3
Q
How is the empirical formula calculated?
A
- %mass or mass / Ar
- All Ar’s / smallest Ar to give ratio
4
Q
What is the molecular formula?
A
The actual number of atoms of each element in each molecule of a substance
5
Q
What is the only way of calculating molecular formula from empirical formula?
A
Using Mr
6
Q
How is the ratio of empirical to molecular formula calculated?
A
Mr/ Empirical Mr
