How do you solve empirical formula calculations?
The explanation is given below.
Step 1 : Assume percentages as masses contained in a total of 100 grams.
Step 2 : Use
Step 3 : Divide all number of moles by the smallest.
Step 4 : Round them to nearest whole numbers and assign as subscripts.
Example question: Calculate empirical formula of a compound that has
Assume that 100 grams contains
To move on to step 2, you also need to know the molar mass of
Now you can find the number of moles for each atom.
Step 3, multiply the number of moles by the smallest.
*Has been rounded to nearest whole number
Step 4, assign them as subscripts.
Since there is 2 Hydrogen and and 1 Oxygen, you know that the empirical formula is