you ran a mile 4:45 ( four minutes , 45 seconds ) The current school record was set when there was a push for the united states to only use metric units of measurement and is reported as 5.55 meters/seconds. Did you beat the record ?

Compare and contrast physical changes with chemical changes.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor how many grams of water are produced by the same amount of c2h2?