C3 stiochiometry Flashcards
1
Q
define molecular formula of a compound
A
- number and type of atoms
- in one molecule
2
Q
formula of hydroxide
A
3
Q
formula of carbonate
A
4
Q
formula of chlorate
A
5
Q
formula of nitrate
A
6
Q
formula of sulfate
A
7
Q
define relative atomic mass
A
- avg mass
- of the isotopes of an element
- compared to 1/12th of the mass of an atom of ^12 C
8
Q
symbol for relative atomic mass
A
Ar
9
Q
define relative molecular mass
A
- sum of relative atomic masses
- ionic compounds: relative formula mass
10
Q
symbol for relative molecular/formula mass
A
Mr
11
Q
unit for concentration
A
g/dm^3
12
Q
define the mole
A
- unit of amount of substance
- one mole contains 6.02*10^23 particles (number known as the Avogadro constant)
13
Q
how to calculate amount of substance from mass and molar mass
A
moles = mass / molar mass
14
Q
units for molar mass
A
g/mol
15
Q
how to calculate mass from amount of substance and molar mass
A
mass = molar mass * amount of substance
