C9 calculations Flashcards
(4 cards)
1
Q
what is the equation for moles?
A
mass = moles x Mr
2
Q
recall how to calculate the empirical formula:
A
divide the mass of substance by the relative atomic mass for both, then divide each by the smallest number to find the ratio.
3
Q
what is the conservation of mass law?
A
matter can be neither created nor destroyed
4
Q
A
