When drawing lewis structures for simple molecules, you need to first sum the number of valence electrons from all atoms in the molecule. how many valence electrons should you use to draw a lewis structure of carbon dioxide (co2)?

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11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Frequency of electromagnetic waves that a radio station is assigned. what do you call this type of wave?