Extra - Molar Mass Flashcards
1
Q
what is avogadro’s number?
A
6.02 x 10^23
2
Q
molar mass (amu) equals…
A
molar mass (g/mol)
3
Q
how do you find the molar mass of a compound?
A
add together the atomic masses of the elements that make up the atom. (don’t forget to multiply atomic mass by # if multiple)
4
Q
what is the equation to calculate percent composition?
A
- add molar masses of atoms in the compound
- (mass of element/mass of compound) x 100.
5
Q
when added together, percent compositions of each element when added together should equal…
A
100%