Sketch the three classes of levers (as best you can), including labels. Label each as to its mechanical advantage (>,<, or =)

How many molecules are present in 3 mols of silicon dioxide (sio2)?

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages