Which is an acceptable lewis structure for a diatomic nitrogen molecule?

List four observations that indicate that a chemical reaction may be taking place

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here