CHAPTER 4 Flashcards
1
Q
Equation for number of moles
A
Number of moles = mass/RFM
2
Q
Equation for percentage yield
A
Actual mass/ maximum theoretical mass x 100
3
Q
Atom economy
A
RFM of useful products / RFM of all reactants x 100
4
Q
Equation for concentration
A
Concentration = mass of solute x Volume of solution 100
5
Q
Equation for number of moles of gas
A
Moles of gas = volume of gas / 24 dm^3
6
Q
What is a mole
A
The RFM of a substance in grams
7
Q
Which number do you use when calculating the RFM
A
The bottom of biggest number
8
Q
What is the avagrado constant
A
6.02 x 10-23
9
Q
How to balance equation using masses
A
Work out number of moles for all substances involved
Divide each number by the smallest
This is how many moles of each there is
