I have found this fantastic calculator: http://www.ajdesigner.com/phptherma...pansion_equation_volumetric_volume_change.php I need to use it to work out how much Mercury I need to expand it by 50 Litres under temperature. First things first though, i’m getting completely improbable answers out of the calculator because i am entering the wrong 'volumetric expansion coefficent (b)'. here is what i am entering: volumetric expansion coefficent (b): .00182 initial volume (Vinitial): 500 Litres final temperature (Tfinal):67 decC initial temperature (Tinitial):1 degC And my results: 500 Litres ---> expands to ---> 560.06 Litres Is this correct? I was expecting a greater expansion. Thank you.