UNIT 1 TOPIC 6 Flashcards
1
Q
What is relative isotope mass?
A
mass of an atom’s isotope relative to mass of carbon 12 atom
2
Q
What is the unit for relative mass?
A
HAS NONE
3
Q
What is relative atomic mass?
A
weighted average of isotopic mass
(relative isotopic mass x % abundance)100
4
Q
What is a mol?
A
n
unit of measurement
1 mol = 6.02 x 10*23
5
Q
What is Avogardo’s constant?
A
NA
6.02 x 10*23
6
Q
What is the two key mol conversion formulas?
A
n = N/NA
n = m/M
7
Q
What is molar mass?
A
M
equal to relative atomic mass
unit g/mol-1
8
Q
What is the percentage composition formula?
A
(molar mass of element/molar mass of compound) x 100
9
Q
What is the empirical formula?
A
compound that gives simplest whole number ratio of atoms or ions
