C3 Flashcards
1
Q
what is the symbol for relative atomic mass
A
Mr
2
Q
what does it mean when a reactant is in excess?
A
There is more than is needed, so there is some left at the reaction
3
Q
what is avrogado constant
A
6.022 × 10²³
4
Q
what is the formula for moles
A
moles = mass/ mr
5
Q
what is the law of conservation of mass
A
no atoms or lost or made during a chemical reaction
6
Q
what is the symbol for atomic mass
A
Ar
7
Q
what is a limiting reactant
A
a reactant that gets all used up and limits how much product can be made
8
Q
A
