empirical formula

Question 1

empirical formula

Answer 1

simplest ratio of atoms of each element in the compound

Question 2

general method

Answer 2

1. divide each mass (or % mass) by the atomic mass of the element
2. for each of the answers from step 1 divide by the smallest one of those numbers
3. sometimes the numbers calculated in step 2 will need to be multiplied up to give whole numbers

these whole numbers will be the empirical formula

Question 3

molecular formula

Answer 3

actual number of atoms of each element in the compound