Moles Flashcards
EL6
1
Q
how do you find the number of moles of water by crystallisation by experiment?
A
- heat the solid to drive off the water of crystallisation
- use a known mass
- weigh the solid left over
2
Q
what does it mean if a crystal contains water of crystallisation?
A
there are water molecules locked inside its crystal structure
3
Q
what does heating a hydrated solid do?
A
drives off the water of crystallisation
4
Q
whats the product left behind called when you heat a hydrated solid?
A
an anhydrous solid
5
Q
how do you calculate the empirical formula?
A
mass
Ar
mol
ratio
6
Q
A
