Chapter 3 - Chemical Reations And Stoichiometry Flashcards
0
Q
What is the formula for percentage yield?
A
Percentage yield = actual yield/theoretical yield x 100
1
Q
What is the equation for molar mass?
A
M= m/n
M- molar mass
m - mass
n - number of moles
2
Q
What is the formula for concentration?
A
c= n/ v
c- concentration
n- number of moles
v- volume in litres
3
Q
Molarity unit
A
mol L^-1 = M
4
Q
Percentage by mass
A
Percentage by mass of element= mass of element in sample / mass of whole sample x 100
5
Q
Empirical formula
A
Simplest whole number ratio of elements
6
Q
Molecular formula
A
Chemical composition of 1 molecule
7
Q
Mole definition
A
The amount of any substance with the same number of atoms or molecules as exactly 12 grams of Carbon 12
8
Q
Avagadros constant definition
A
Number of atoms or molecules in 1 mole of a substance
