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Chemical substance with Chemical Formula: H2O.
In narrow meaning it defines liquid form of water to discriminate it from ice and vapor which have the same molecular formula.
It is transparentTransparent, tasteless, odorless, and nearly colorless chemical substance,
It which is the main constituent of Earth's streams, lakes, and oceans, and the fluidsfluid of most living organisms.
The chemical formula = H2O
Dynamic properties:
See also
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Natural Science / Physics / Chemistry / Chemical Substance
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title | ARAX |
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title | Water Properties Table |
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Liquid water physical data changes with temperature
Temp., °C | Dynamic Viscosity, cP | Change in viscosity with pressure, ps | Compressibility, GPa-1 a | Density, kg m-3 a | Speed of sound, m s-1 | Specific heat, J mol-1 K-1 | Thermal expansivity, 10-3 K-1 a | Vapor pressure, kPa | Molar volume, cm-3 |
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βT | βS | CP a | CV |
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-38 e |
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| 1.1581 | 0.8023 | 968.1 | 1135 | 108 | 75 c | -2.963 | 0.016 f | 18.609 |
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-30 | 8.989 | -30 | 0.8079 | 0.7109 | 983.9 | 1196 b | 90 | 79.19 c | -1.400 | 0.051 | 18.311 |
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-20 | 4.473 | -12 | 0.6425 | 0.6175 | 993.6 | 1277 b | 80.2 | 77.08 c | -0.661 | 0.126 | 18.132 |
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-10 | 2.668 | -5.4 | 0.5583 | 0.5531 | 998.1 | 1346 b | 77.2 | 76.47 c | -0.292 | 0.287 | 18.049 |
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0 | 1.792 | -2.5 | 0.5089 | 0.5086 | 999.8 | 1402 | 76.01 | 75.97 | -0.068 | 0.611 | 18.018 |
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10 | 1.307 | -1.0 | 0.4781 | 0.4776 | 999.7 | 1448 | 75.57 | 75.49 | 0.088 | 1.228 | 18.021 |
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20 | 1.002 | -0.4 | 0.4589 | 0.4559 | 998.2 | 1483 | 75.38 | 74.88 | 0.207 | 2.339 | 18.048 |
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30 | 0.797 | -0.05 | 0.4477 | 0.4410 | 995.7 | 1510 | 75.30 | 74.17 | 0.303 | 4.247 | 18.094 |
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40 | 0.653 | 0.04 | 0.4424 | 0.4312 | 992.2 | 1530 | 75.29 | 73.38 | 0.385 | 7.385 | 18.157 |
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50 | 0.547 | 0.08 | 0.4417 | 0.4253 | 988.0 | 1543 | 75.33 | 72.53 | 0.458 | 12.353 | 18.234 |
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60 | 0.467 | 0.11 | 0.4450 | 0.4229 | 983.2 | 1551 | 75.39 | 71.64 | 0.523 | 19.947 | 18.323 |
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70 | 0.400 | 0.14 | 0.4516 | 0.4230 | 977.8 | 1555 | 75.49 | 70.71 | 0.584 | 31.202 | 18.425 |
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80 | 0.355 | 0.17 | 0.4614 | 0.4258 | 971.8 | 1554 | 75.61 | 69.77 | 0.641 | 47.415 | 18.538 |
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90 | 0.310 | 0.19 | 0.4743 | 0.4309 | 965.4 | 1550 | 75.76 | 68.82 | 0.696 | 70.181 | 18.663 |
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100 | 0.283 | 0.20 | 0.4902 | 0.4382 | 958.4 | 1543 | 75.95 | 67.89 | 0.750 | 101.325 | 18.798 |
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a Equations generating the specific volumes, specific isobaric heat capacities, thermal expansion coefficients and isothermal compressibility coefficients over a range of temperatures and pressures are available
b Calculated using the equation u2 = 1/βSρ where u is the speed of sound (m s-1), βS is the adiabatic compressibility (Pa-1) and ρ is the density (kg m-3).
c Calculated using the equation Image Added where T=temperature (K), V=molar volume (m3 mol-1), α=thermal expansivity (K-1) and βT=isothermal compressibility (Pa-1).
d Calculated using the equation Image Addedwhere α=thermal expansivity (K-1), T=temperature (K), ρ=density (kg m-3), and CP=isobaric specific heat (J kg-1 K-1). κS may also be calculated by βS=βTCv /Cp.
e Data is calculated from the supercooled water equation of state
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