Water - Specific Volume - Online calculator figures and tables showing Specific Volume of water at temperatures ranging from 0-370 C and 32 - 700 F - Imperial and IS Units. Linear thermal expansion coefficient a at 20C for Mercury is 61 x 10 -6 C and Volumetric coefficient for thermal expansion v at 20C is 182 x 10 -6 C. MathrmDeltaV_mathrmmbeta_mathrmm V_0leftt_1-t_0right where v m is the coefficient of volume expansion of mercury V 0 is the volume of mercury at initial temperature and t 1 t 0 is the temperature difference.
Mercury reaches so high that the unfilled space maintains the same volume during temperature changes.
MathrmDeltaV_mathrmmbeta_mathrmm V_0leftt_1-t_0right where v m is the coefficient of volume expansion of mercury V 0 is the volume of mercury at initial temperature and t 1 t 0 is the temperature difference. A mercury thermometer has a bulb of volume 0100 cm3at 10oC. When a substance is heated molecules begin to vibrate and move more usually creating more distance between themselves. The accepted value of the coefficient of volume expansion of mercury is 180 10 4 C.