quantitative Flashcards
(9 cards)
1
Q
find percentage of something in a compund
A
relative atomic mass / total relative atomic mass x100
2
Q
find amount of moles
A
mass / ar or mr
3
Q
equation of concentration(2)
A
mass / volume or moles / volume
4
Q
cm 3 to dm 3
A
divide by 1000
5
Q
3 reasons we cannot have 100 % yield
A
reaction may not go to completion
some product may be lost when separated from initial bowl
react in a diff way
6
Q
percentage yield reaction
A
actual / theoretical X 100
7
Q
atom economy
A
relative mass desired product / relative mass of all reactants x 100
8
Q
volume in a gas
A
moles x 24
9
Q
whats avagado constant
A
6.023 X 100^23
