A compound of 2.225 g, known to be a carbohydrate, was analyzed and found to contain 0.890 g of carbon, 0.148 g of hydrogen and the rest was oxygen. How do you determine the percentage composition by mass of the compound?
The mass percentage of a substance in a compound is represented by the equation
What we can do first is find it how much
Now, let's use the above formula to calculate the percentage by mass of each component: