What is true of valence electrons? question 14 options: they exist in the outer orbital. they have difficulty moving from one orbital to another. they are always the lowest energy electrons of the atom. they easily move from one orbital to anothe

What does the symbol (–hfus) indicate in a phase change?

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.

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid