Quantitative Chemistry Flashcards
1
Q
Formula to calculate moles
A
Mass in g / Mr
2
Q
Formula to calculate % mass of an element
A
Ar x number of atoms in an element / Mr of the compound times by 100
3
Q
Formula to calculate volume of gas
A
Mass of gas / Mr of gas times by 24
4
Q
Formula of concentration of a solution in g/dm cube
A
Mass of solute / volume of solvent
5
Q
Formula of concentration in mol/dm cubed
A
Number of moles of solute / volume of solvent
6
Q
Atom economy formula
A
Relative formula mass of desired product / relative formula mass of all reactants x 100
7
Q
Percentage yield formula
A
Mass of product actually made / maximum theoretical mass of product x 100
