Stoichiometry Flashcards
1
Q
Molar mass
A
The mass in grams of a mole of that substance
2
Q
Relative molecular mass
A
Mr
The mass of a molecule compared to 1/12 of the mass of a carbon 12 isotope
3
Q
Avogadro constant
A
6 x 10(^23) mol (^-1)
4
Q
Moles into grams
A
No. Of moles x relmolmas
5
Q
Moles to litres
A
No. Of moles x 22.4 (STP)
6
Q
Moles to no. Of particles
A
No. Of moles x avagedros no. (6x10^23)
7
Q
Molarity
A
M
8
Q
Number of moles/mass/molarmass
A
Number of moles= mass/molar mass(mass of one mole)
9
Q
Percentage composition by mass
A
Desired mass/molecular mass(total mass) x 100
