In the ideal gas law, the variable n represents O the ideal gas constant
O number of Joules
O the number of moles
O the number of neutrons

C: The number of moles

Explanation:

The ideal gas law is simply the general gas equation for a hypothetical gas and the formula for this ideal gas law is simply;

PV = nRT

Where;

P is pressure

V is volume

n is amount of substance in moles

R is ideal gas constant

T is temperature

Looking at the options, the correct answer is option C.