Quantitative chemistry Flashcards
1
Q
Percentage mass of an element in a compound=
A
Ar x number of that element/ Mr of that compound
x100
2
Q
What is Mr
A
relative formula mass
-which is the relative atomic masses of all the atoms in the molecular formula added tg
3
Q
What is the Avogadro constant
A
6.02 x 10^23
4
Q
What is one mole of any substance
A
the amount of that substance that contains an avogadro number of particles
-the particles cld be atoms ,molecules, ions or electrons
5
Q
A
