Calculation Flashcards
1
Q
Formula for moles
A
Moles = mass(g) / Mr
2
Q
Formula for moles for liquids
A
Moles = concentration(mol/dm³) x Volume (dm³)
n ———— conc x V
3
Q
cm³ to dm³
A
Divide by 1000
4
Q
Formula for Percentage yield
A
%yield = actual yield / theoretical yield x 100
5
Q
Formula for atom economy
A
%atom economy = Mr of desired product / Mr of all reactants x 100
6
Q
Reasons why atom economy may be low
A
Side reactions
Incomplete reactions
Product may be lost
7
Q
Formula for ideal gas equation
A
PV = nRT P = pressure V = volume n = moles R = universal gas constant (8.31) T = temperature (kelvin)
8
Q
Conversation from Celsius to kelvin
A
+273
9
Q
Covert dm cubed and cm cubed to m^3
A
dm^3 / 1000 = m^3
cm^3 / 1,000,000 = m^3
