Extra - Molar Mass

Question 1

what is avogadro’s number?

Answer 1

6.02 x 10^23

Question 2

molar mass (amu) equals…

Answer 2

molar mass (g/mol)

Question 3

how do you find the molar mass of a compound?

Answer 3

add together the atomic masses of the elements that make up the atom. (don’t forget to multiply atomic mass by # if multiple)

Question 4

what is the equation to calculate percent composition?

Answer 4

1. add molar masses of atoms in the compound
2. (mass of element/mass of compound) x 100.

Question 5

when added together, percent compositions of each element when added together should equal…

Answer 5

100%