C4.1/C4.2 - Relative mass and moles Flashcards
1
Q
Relative atomic mass
A
-aka Ar
-unit = grams
-masses of atoms compared by measuring Ar of carbon -12
2
Q
Mr
A
-grams
-Ar of compounds
3
Q
mole
A
-unit for amount of substance in Ar
-formula mass of substance
-grams
4
Q
Avogardo’s constant
A
- 6.022 x 10 to the power of 23
5
Q
Equation involving moles/mass/Mr
A
moles = mass/Mr
6
Q
Balanced symbol equations relation to moles
A
-tell you number of moles of substance in reaction
7
Q
Avogadros constant refers to
A
Number of atoms per mole
Or in a compound number of molecules per mole
8
Q
Number of atoms using avogadros constant
A
avogadros constant x amount of moles
9
Q
Number of atoms in a compound in an amount of moles using avogadros constant
A
Molecules num = avogadros constant x amount
Ans x number of atoms in compound