Unit 3 (Empirical Formula and composition) Flashcards
1
Q
What is Formula Mass?
A
The sum of the atomic weight of the atom in the empirical formula of the compound.
2
Q
What is an Empirical Formula?
A
The simplest whole number ratio of the atoms of elements in a compound.
3
Q
True or False: Molecular Formula and Empirical Formula are the same thing
A
False. Though sometimes the Empirical and Molecular Formula may be the same.
4
Q
How do we calculate the percent composition by mass?
A
%E = Mass of E/ Mass of Sample * 100
5
Q
What is the percent composition equation?
A
% Compound = n * Molar mass or element/molar mass of compound * 100
6
Q
A
