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1481 m/s at 20 °C 1507 m/s at 30 °C 1526 m/s at 40 °C 1541 m/s at 50 °C 1552 m/s at 60 °C 1555 m/s at 70 °C 1555 m/s at 80 °C 1550 m/s at 90 °C 1543 m/s at 100 °C Density [9] [2] [page needed] 0.983854 g/cm 3 at −30 °C 0.99221 g/cm 3 at 40 °C 0.993547 g/cm 3 at −20 °C 0.99022 g/cm 3 at 45 °C
The increase observed for water from 0 °C (32 °F) to 3.98 °C (39.16 °F) and for a few other liquids [d] is described as negative thermal expansion. Regular, hexagonal ice is also less dense than liquid water—upon freezing, the density of water decreases by about 9%. [36] [e]
Since the density of dry air at 101.325 kPa at 20 °C is [9] 0.001205 g/cm 3 and that of water is 0.998203 g/cm 3 we see that the difference between true and apparent relative densities for a substance with relative density (20 °C/20 °C) of about 1.100 would be 0.000120. Where the relative density of the sample is close to that of water (for ...
Density (g cm-3) Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; Aniline: 184.3 3.69 ... K f [2] K b [1] Water: 100.00 0. ...
The current ASBC table is (20 °C/20 °C) meaning that the density is measured at 20 °C (68 °F) and referenced to the density of water at 20 °C (68 °F) (i.e. 0.998203 g/cm 3 or 0.0360624 lb/cu in). Mathematically
The viscosity of water is about 10 −3 Pa·s or 0.01 poise at 20 °C (68 °F), and the speed of sound in liquid water ranges between 1,400 and 1,540 metres per second (4,600 and 5,100 ft/s) depending on temperature.
The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...
Density of pure water at 60 °F = / or / [8] Note: There is no universal agreement on the exact density of pure water at various temperatures since each industry will often use a different standard. For example the, USGS says it is 0.99907 g/cm 3 . [ 9 ]