The recorded values for the pressure, volume and temperature of a known mass of a gaseous compound are to be inserted into the equation $pV = nRT$. These measurements are then used to work out the relative molecular mass, $M_r$, of a compound. Which pressure and temperature conditions would produce the most accurate value of $M_r$?
- Ahigh pressure, high temperature
- Bhigh pressure, low temperature
- Clow pressure, high temperature
- Dlow pressure, low temperature