Amount of Substance 1 Flashcards
1
Q
Mass Number
A
the number of protons and neutrons
2
Q
Atomic Number
A
the number of protons
3
Q
Proton Mass
A
1
4
Q
Proton Charge
A
+1
5
Q
Neuton Mass
A
1
6
Q
Neutron Charge
A
0
7
Q
Electron Mass
A
negligable
8
Q
Electron Charge
A
-1
9
Q
Ar =
A
avergae mass of one atom of an element / 1/12 mass of an atom of carbon 12
10
Q
Mr =
A
average mass of one molecule / 1/12 mass of an atom of carbon 12
11
Q
Avogadros Number
A
6.0225 X 10^23
12
Q
mass of one atom
A
mass of a mole / avogadros number
13
Q
mass of one carbon
A
12 / 6.0225X10^23
14
Q
mass
A
mole X mr
15
Q
Empiracle Formula
A
simplest whole number ratio of atoms of each moleule in the compound
H2O2 —-> HO
