Amount of Substance Flashcards
1
Q
relative atomic mass
A
mean mass of atom of element divided by 1/12 mass of C12
2
Q
acogadro’s constant
A
6.022 x 10^23
3
Q
1 mol of C12 mass?
A
12 g
4
Q
moles formula
A
mass / Mr
5
Q
moles formula (conc)
A
conc * vol
mol/dm^3 * dm^3
6
Q
1dm3
A
1000cm3
7
Q
ideal gas equation
A
pV = nRT
p = pressure/Pa V = vol/m3 n = no. of moles R = 8.31 T = temp/K
8
Q
K to C
A
K = C + 273
9
Q
ideal gas trends under standard conditions
A
pressure is proportional to temp
volume is proportional to temp
pressure and volume are inversely proportional
10
Q
pV = nRT = ?
A
mRT / Mr
m = mass/g
11
Q
empirical formula
A
simplest whole number ratio of atoms of each element in a compound
12
Q
molecular formula
A
actual number of atoms of each element in a compound
13
Q
Aluminium charge
A
3 +
metal
14
Q
Ag ion
A
Ag +
15
Q
Zn ion
A
Zn 2+
