How many meters are present in the 12.45 miles? Please show your work, and report your answer with the correct number of significant figures and appropriate units.

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Particles vibrate in a rigid structure and do not move relative to their neighbors.

What human activity increases beach erosion?