What is the Lewis dot structure for
PF5

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Why do lunar and solar eclipse not happen every month

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?