Quantative Chemistry Flashcards
1
Q
% mass of an element in a compound
A
=atomic mass x number of atoms DIVIDED BY Mr of the compound X100
2
Q
What is avagradros number
A
6.02 x10^23
3
Q
What does 1 mole =
A
1g
4
Q
Number of moles=
A
Mass in g(of element or compound) DIVIDED BY Mr (of the element or compound)
5
Q
Mass=
A
Number of moles X Mr
6
Q
When does a reaction stop
A
When all the excess reactant is used up
7
Q
What is concentration a measure of
A
How crowded an area is
8
Q
Concentration =
A
Mass of solute DIVIDED BY volume of solvent
