3. The mass percent of nitrogen in NH4Cl is * O 16.7% nitrogen
0 25.0% nitrogen
0 26.2% nitrogen
O none of these

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

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.