What is the symbol for moles used in the ideal gas equation

N stands for the number of moles

Explanation:

An ideal gas can be characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them may be deduced from kinetic theory and is called the. n = number of moles. R = universal gas constant = 8.3145 J/mol K. N = number of molecules.

c is the answer because when something is left after something evaporates that shows the chemical change.