5.8 Relative Formula Mass Flashcards
1
Q
What is the relative atomic mass?
A
The average mass of all the isotopes of that element
2
Q
What is the equation for the percentage mass of an element in a compound?
A
Percentage mass of an element in a compound = Ar x number of atoms of that element/Mr of the compound x 100
3
Q
What is the equation for relative atomic mass?
A
Relative atomic mass = sum of (isotope abundance x isotope mass number) / sum of abundances of all the isotopes
4
Q
What is the symbol for relative atomic mass?
A
Ar
5
Q
What is the symbol for relative formula mass?
A
Mr
