Do Now #10 - Law of Conservation of Mass

Do Now # 10:  What is the law of conservation of mass/matter and does it make sense to you?  Why or why not?


































1. You have a 20Kg block of wood in a fire.  An hour later there is 1 Kg of black ash.  What happened to the other 19 Kg?


2. You add 20 gallons of fuel to your car.  How much does that mass in Kg? After a week you have only 1 Kg of fuel left in your car, what happened to the other _______Kg?

 1 US gallon = 3.78541178 liter  and the density of Fuel lets say is .7g/mL

3. Lets imagine a tree absorbing 100 Kg of of CO2 per year.  Lets also say it emits 73Kg of oxygen back into the atmosphere.   What happened to the other 27%?

4. The U.S. gets about 52% of all its energy for electricity from Coal fired power plants. 1.39 x10 e12 pounds of coal were consumed last year for the production of energy. How much Carbon Dioxide was emitted into the atmosphere?

5.