An atom of nitrogen, N, has a mass number 5. How many neutrons does it have? Explain the reasoning behind your answer.

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

How have the greenhouse gasses increased from the year 2000 to 2018

Draw the lewis dot structure for each of the following polyatomic ions