1.Moles and equations

Question 1

Avagardros number?

Answer 1

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

Question 2

define mole

Answer 2

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

Question 3

Mass=

Answer 3

mr mole

Question 4

Concentration=

Answer 4

mol/volume

Question 5

Gas volume=

Answer 5

mol x 24

Question 6

define water of crystalisation

Answer 6

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

Question 7

empirical formula-

Answer 7

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

Question 8

molecular formula-

Answer 8

The number of atoms of each element present in a compound

Question 9

Charge is written….

Oxidation number is writtem…

Answer 9

C=      2+
ON=   +2

Question 10

Anhydrous

Answer 10

a substance containing no water molecules

Question 11

hydrated

Answer 11

crystalline and containing water molecules

Question 12

how do you get conconrent results

Answer 12

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