Moles Flashcards
1
Q
What is Avogadro’s number?
A
6.02 x 10^23
2
Q
What is the molar mass of an element?
A
The relative atomic mass (Ar) of an element in grams
3
Q
What is the mass of one mole carbon?
A
12g
4
Q
What is the molar mass of a compound?
A
The relative formula mass (Mr) of the compound in grams.
5
Q
What is the mass of one mole carbon dioxide?
A
44g
6
Q
What is the equation for moles?
A
Moles = mass (g) / Mr
7
Q
How do you calculate the moles in an equation?
A
Moles –> Ratio –> Moles
8
Q
What is the volume of 1 mole of any gas at 25^oC and 1 atmosphere.
A
24dm^3 (litres)
