Which of the following is a FALSE statement? 1. Heat Heat moves moves through through solids solids by by conduction. conduction.
2. Molecules Molecules move move faster faster in in warmer warmer substances. substances.
3.Warm Warm water water is is denser denser than than cold cold water. water.
4. Heat Heat moves moves through through liquids liquids and and gases gases by by convection. convection.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.