英英(朗文):the lack of something that you need in order to be healthy, comfortable, or happy. 3.vapor(also vapour)n.水蒸气,蒸汽 英英(朗文):a mass of very small drops of a liquid which float in the air, for example because the liquid has been heated. 4.water activity n.水分活度 名...
Water occurs as a liquid on the surface of Earth under normal conditions, which makes it invaluable for transportation, for recreation, and as a habitat for amyriadofplantsandanimals. The fact that water is readily changed to a vapour (gas) allows it to be transported through theatmospherefrom...
1.6 Molecular Formula H2O 1.7 Inchi InChI=1S/H2O/h1H2 1.8 InChkey XLYOFNOQVPJJNP-UHFFFAOYSA-N 1.9 Canonical Smiles O 1.10 Isomers Smiles O2. Properties2.1 Vapour pressure <1 (vs air) 2.2 Vapour Pressure 24.5±0.3 mmHg at 25°C 2.3 form 水具有多种形态,包括超临界流体、超固体、超流体、...
The major chemical and physical properties of water are: Water is a liquid at standard temperature and pressure. It is tasteless and odorless. The intrinsic colour of water and ice is a very slight blue hue, although both appear colorless in small quantities. Water vapour is essentially invisi...
water reaches its boiling point and is converted into water vapour. q3 what is the appearance of water at stp? at stp, water exists as a colourless and a tasteless liquid. q4 why is water called a universal solvent? water is referred to as a universal solvent since it has the ability ...
and Copland E.H., Predicting oxide stability in high-temperature water vapour, JOM 58 (2006) 22-28.E.J. Opila, N.S. Jacobson, D.L. Myers, E.H. Copland, Predicting oxide stability in high-Temperature water vapor, JOM (2006) 22-27....
By using meteorological data of 105 aerological stations during the period of 1960 - 1969, we calculated the average monthly water vapour content over the mainland of China. The formula of water vapour content in air column is expressed by W =1/g∫ppzqdp (mm) where q is specific humidity...
Chemical & Physical Properties Density1.0±0.1 g/cm3 Boiling Point100.0±9.0 °C at 760 mmHg Melting Point0 ºC Molecular FormulaH2O Molecular Weight18.015 Flash Point100°C Exact Mass18.010565 PSA9.23000 LogP-1.38 Vapour density<1 (vs air) ...
vapour (ˈveɪpə) or vapor n 1. (General Physics) particles of moisture or other substance suspended in air and visible as clouds, smoke, etc 2. (General Physics) a gaseous substance at a temperature below its critical temperature. Compare gas3 3. (General Physics) a substance tha...
distillation of water involves boiling water and collecting the vapour and leaving the bacteria and contaminants behind. distilled water is one of the purest forms of water, 98% of the contaminants are removed from the home distillation system and it gives water which is purer than that from ...