enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Osmium compounds - Wikipedia

   en.wikipedia.org/wiki/Osmium_compounds

   Osmium(I) iodide is a metallic grey solid produced by the reaction of osmium tetroxide and hydroiodic acid heated in a water bath for 48 hours in a carbon dioxide atmosphere. It is an amorphous compound. [34] Osmium(II) iodide is a black solid [35] produced by the reaction of osmium tetroxide and hydroiodic acid at 250 °C in nitrogen: [34]

3. Osmium - Wikipedia

   en.wikipedia.org/wiki/Osmium

   Osmium (from Ancient Greek ὀσμή (osmḗ) ' smell ') is a chemical element; it has symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.

4. Water flow test - Wikipedia

   en.wikipedia.org/wiki/Water_flow_test

   A process to perform a water flow test is explained in the model fire codes as published by NFPA (National Fire Protection Association). If a water supply source is considered weak compared to what is required by the sprinkler system design hydraulic calculation , the water pressure can be boosted by means of a fire pump .

5. Osmium tetroxide - Wikipedia

   en.wikipedia.org/wiki/Osmium_tetroxide

   The osmium of OsO 4 has an oxidation number of VIII; however, the metal does not possess a corresponding 8+ charge as the bonding in the compound is largely covalent in character (the ionization energy required to produce a formal 8+ charge also far exceeds the energies available in normal chemical reactions). The osmium atom exhibits double ...

6. Osmium(II) chloride - Wikipedia

   en.wikipedia.org/wiki/Osmium(II)_chloride

   Osmium (II) chloride or ... chloride is a hygroscopic dark brown solid that is insoluble in water. [3] ... Osmium(II) chloride does not react with hydrochloric acid ...

7. Osmium(IV) fluoride - Wikipedia

   en.wikipedia.org/wiki/Osmium(IV)_fluoride

   Osmium(IV) fluoride is an ... Osmium(IV) fluoride reacts with water. [3] OsF 4 + 2H 2 O → OsO 2 + 4HF. References This page was last edited on 29 December 2023, at ...

8. Osmium hexafluoride - Wikipedia

   en.wikipedia.org/wiki/Osmium_hexafluoride

   Osmium hexafluoride is a yellow crystalline solid that melts at 33.4 °C and boils at 47.5 °C. [1] The solid structure measured at −140 °C is orthorhombic space group Pnma. Lattice parameters are a = 9.387 Å, b = 8.543 Å, and c = 4.944 Å.

9. Osmium tetrasulfide - Wikipedia

   en.wikipedia.org/wiki/Osmium_tetrasulfide

   Osmium tetrasulfide is an inorganic compound, a salt of osmium metal and hydrogen sulfide acid with the chemical formula OsS 4. [1] ... It does not dissolve in cold ...