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Thanks Chet, I'm not quite familiar with this dummy variable concept, but I'll do some reading. Thanks for the input.

So just to confirm I'm doing it right Chestermiller. I've fitted a curve to the data points given in some of the tables I linked earlier, which gives β(T). I then find the definite integral of this function over the temperature range (e.g 20°-100°C), then multiply by the initial volume? ΔV =...

Thank you all for your assistance. I'm a little rusty on my calculus, but Nidum's links are perfect for my purposes. Thanks again!

Hello, Thank you both for your replies. I'm a little unconvinced that using the coefficient of the base temperature is correct. Using 25L from 20 to 100°C with coefficient 0.000207 as per (http://www.engineeringtoolbox.com/volumetric-temperature-expansion-d_315.html) I get ΔV = 1.9715 L, which...

Hello, I'm trying to determine a way of calculating the thermal expansion of a volume of water. The formula I have come across is: ΔV = βV0ΛT The general consensus seems to be that water expands roughly 4% from 20°C to 100°C, or 4.2% from 4°C to 100°C...