Unit 3: Moles And Stoichiometry Flashcards
0
Q
Why is figuring out the limiting reagent useful?
A
Save money, less pollution, know how much to prepare
1
Q
What is the mole equation?
A
N= m/M
2
Q
What is the percentage composition equation?
A
% composition = mass of element / mass of compound (100)
3
Q
What is the percentage yield equation?
A
% yield = actual yield / theoretical yield x 100
4
Q
Steps for an empirical formula
A
- Convert % to grams
- Find mol
- Divide by smallest mol
5
Q
Solving for molecular formula?
A
- Find mass
- M = % x Mcompound
- Find mol (n=m/M)
- Mol = subscript
6
Q
What is the number of entities formula?
A
N = n x Na
