Search results
Results from the WOW.Com Content Network
Molecular FeH can also be obtained (together with FeH 2 and other species) by vaporizing iron in an argon-hydrogen atmosphere and freezing the gas on a solid surface at about 10 K (-263 °C). The compound can be detected by infrared spectroscopy , and about half of it disappears when the sample is briefly warmed to 30 K. [ 15 ] A variant ...
Space-filling model of the iron(I) hydride (FeH) free molecule. An iron hydride is a chemical system which contains iron and hydrogen in some associated form. [1] [2]Because of the common occurrence of those two elements in the universe, possible compounds of hydrogen and iron have attracted attention.
The most precisely characterised FeH 2 L 4 complex as of 2003 is FeH 2 (CO) 2 [P(OPh) 3] 2. Complexes can also contain FeH 2 with hydrogen molecules as a ligand. Those with one or two molecules of hydrogen are unstable, but FeH 2 (H 2) 3 is stable and can be produced by the evaporation of iron into hydrogen gas. [6]
Casio fx-570MS 2nd Edition calculator. This is a revised version of the original fx-570MS. Revised variants of W Series of calculators including new functions such as: Relocation of multiple functions into menus, previously featured in Casio fx-5500LA, [3] but function is selected by numeric keypad; Multiple statement recall; Non-programmable ...
The oxyhydroxide prepared from ferric chloride is usually the β polymorph (akaganeite), often in the form of thin needles. [14] [16] The oxyhydroxide can also be produced by a solid-state transformation from iron(II) chloride tetrahydrate FeCl 2 ·4 H 2 O. [6] The compound also readily forms when iron(II) hydroxide is exposed to air: 4 Fe(OH ...
HP 48G calculator, uses RPL . RPL is a handheld calculator operating system and application programming language used on Hewlett-Packard's scientific graphing RPN (Reverse Polish Notation) calculators of the HP 28, 48, 49 and 50 series, but it is also usable on non-RPN calculators, such as the 38, 39 and 40 series.
Iron (II) hydroxide or ferrous hydroxide is an inorganic compound with the formula Fe(OH) 2.It is produced when iron (II) salts, from a compound such as iron(II) sulfate, are treated with hydroxide ions.
On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [1] [2] [3] On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression.