1e - calculations Flashcards
1
Q
What is Relative formula mass (Mr)?
A
Relative formula mass (Mr) is mass of a molecule or compound (on a scale compared to carbon-12).
2
Q
How do you calculate relative formula mass?
A
It is calculated by adding up the relative atomic masses (Ar) of all the atoms present in the formula.
3
Q
What is a mole(n)?
A
In Chemistry, the mole is a measure of amount of substance (n).
4
Q
What is the relationship between Relative atomic mass(Mr), mass(g) and amount(mols)?
A
Mass = Mr x Mols
