Relative Mass Flashcards
1
Q
whats relative atomic mass
A
the average mass of an atom of an element on a scale where an atom of carbon 12 is exactly 12
2
Q
whats relative isotopic mass
A
the mass of an atom of an isotope of an element on a scale where carbon 12 is exactly 12
3
Q
how do u calculate relative atomic mass
A
( isotopic masses x percentage )
-———————————————-
100
4
Q
how do you calculate molecular mass
A
- ## add up all of the relative atomic masses of the atoms in the molecule
5
Q
whats relative formula mass
A
average mass of a formula unit on a scale where an atom of carbon 12 is exactly 12
