Where does most of the mass of an atom exist?

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

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.

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added