Moles definitions Flashcards
1
Q
Titration
A
The neutralisation of an acid with an alkali, an indicator is used to find the neutralisaton point or end point (when all acid has been neutralised)
2
Q
RAM
A
average mass of an atom of an element compared to 1/12 the mass of carbon 12 isotope
3
Q
Relative masses are
A
comparitive masses, the carbon scale is used as the comarison
4
Q
C12 is chosen
A
because it is stable, easily available and exactly 12 units
5
Q
Moles
A
A quanitity used by a chemist, the quantity of a substance that contains the same number of particles as exactly 12g of C-12
6
Q
One mole=
A
6 x 10^23 number of particles
7
Q
avogadros law
A
equal volumes of gases under the same conditions of temp and pressure would contain the same # particles/molecules.
1 mole of gas at rtp occupies a volume of 24 dm^3
