Chemistry Problem Solving Videos @ WVU

Chem 110A - Prep Chem

Ch.1 - Percentages

What is the percentage of water in a solution made by mixing 18.1 grams of sugar and 97 grams of water? Whats the percentage of sugar?

 

The quality of coal is related to its sulfur content. Too much sulfur, and a vein of coal will not be financially viable to mine. How much sulfur is lbs is contained in a 1.49 X 105 lb sample of coal that is determined to be 1.2 % sulfur?