![]() The STP and the SATP should not be confused with the standard state commonly used in thermodynamic evaluations of the Gibbs energy of a reaction. An unofficial, but commonly used standard is standard ambient temperature and pressure (SATP) as a temperature of 298.15 K (25 C, 77 F) and an absolute pressure of 100 kPa (14.504 psi, 0.987 atm). This behavior of the density of water explains why ice forms at the top of a body of water. The density of water increases with decreasing temperature, reaching a maximum at 4.0 ° C, 4.0 ° C, and then decreases as the temperature falls below 4.0 ° C 4.0 ° C. ![]() In chemistry, IUPAC established standard temperature and pressure (informally abbreviated as STP) as a temperature of 273.15 K (0 C, 32 F) and an absolute pressure of 100 kPa (14.504 psi, 0.987 atm, 1 bar). Table 14.2 shows the density of water in various phases and temperature. The International Standard Metric Conditions for natural gas and similar fluids are 288.15 K (59.00 F 15.00 C) and 101.325 kPa. NIST uses a temperature of 20 C (293.15 K, 68 F) and an absolute pressure of 101.325 kPa (14.696 psi, 1 atm). Compute the Depth of Water associated with a Pressure Some of waters physical properties: Weight: 62.416 pounds/cubic foot at 32☏ 1,000 kilograms/cubic meter.The calculator below can be used to calculate the liquid water density at given temperatures. The density of an object may help identify its. The density of water is 1.940 sl/ft at 39 F (4 C), and the specific weight in Imperial units is. The Density of Water at Standard Temperature and Pressure (STP) is 998.2071 kg/m 3 in SI units. The metric system was originally devised so that water would have a density of 1g/cm3, equivalent to 103kg/m3. This is used as a reference substance for defining Specific Gravity. The Density of Water at Standard Temperature and Pressure is 62.316 lbs/ft 3.
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