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Flashcards in 1.Moles and equations Deck (12):
1

Avagardros number?

6.02x10^23 = the numbe of atoms per mole of carbon 12

2

define mole

the amount of any substance containing as many particles as there are carbon 12 atoms in exactly 12g of the carbon 12 isotope.

3

Mass=

mr mole

4

Concentration=

mol/volume

5

Gas volume=

mol x 24

6

define water of crystalisation

Water molecules that form an essential part of the crystalline structure of a compound.

7

empirical formula-

The simplest whole number ratio of each element present in a compound

8

molecular formula-

The number of atoms of each element present in a compound

9

Charge is written....
Oxidation number is writtem...

C= 2+
ON= +2

10

Anhydrous

a substance containing no water molecules

11

hydrated

crystalline and containing water molecules

12

how do you get conconrent results

cant use trial
the two values must be within 0.1 for titrations (or equivelent) of each other
average is to 1 dp for titrations