1. A recipe for applesauce requires 3.0 cups of apple juice. You only have a metric measuring cup—how many liters of apple juice do you need?(You also know that 1 quart=4 cups, and that 1 L=1.057 quarts)

2.If an experiment requires 50 grams of Boron and you have a carton of Boron that weighs 13 lbs, how many times can you run the experiment? (You know that 1 kilogram=2.205 lbs, and 1000 g=1 kilogram)

3. A sample of plastic contains 70% carbon by weight. How many grams of carbon are in 0.75 lbs. of the plastic? (Use conversion factors from previous problems to solve this.)

4. You work in a factory that makes chocolate chip cookies. Your cookies contain 18% by weight chocolate chips. If your boss tells you that yesterday, the factory used up 300 lbs. of chocolate chips, how many kilograms of cookies did the factory make? (Again, use conversion factors from previous questions to help you here.)

Try google's conversion utility

Let me google that for you - Liters to Quarts

If you have trouble, just use unit analysis:

And by the way, is it really chemistry? I see it more like math.

Just saying.