Draw the structural formula for 1,1-dimethylcyclopropane
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Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.After the dropped box hits the floor, its kinetic energy is converted into ____________
Fill in the blank(s) with correct word
The density of a submerged submarine at rest is about the same as the density of
A) a crab. B) iron. C) a floating submarine. D) water. E) none of the above
For the following reaction, identify whether the compound in bold is behaving as an acid or a base
H3PO4 + H2O ? H2PO4- + H3O+ A) acid B) base C) neither D) both E) none of the above
Notice the blue ovals (such as those indicated by the arrows) in this image of a galaxy cluster. The oval structures are not really located where they appear to be, but instead are multiple images of a single galaxy that lies directly behind the cluster. What do we call the process that creates these multiple images?
A) gravitational lensing B) cluster image distortion C) the arc effect D) dark energy