If the atomic mass of an element is X, what is the mass in grams of 6.02 times 10^{23} atoms of the element? If 3 moles of an element have a mass of 222.0 g, what is the mass of 1 atom? Typically, the mass of an atom of an element in grams is closest to: a. 1023 b. ...
In the case of atoms, it has protons, neutrons, and electrons in it, and each of these sub-atomic particles carries a definite mass, although a neutron is chargeless it has a mass. Answer and Explanation: Atomic mass Th...
Monoisotopic Mass:306.10044231 Complexity:547 Rotatable Bond Count:3 Hydrogen Bond Donor Count:0 Hydrogen Bond Acceptor Count:4 Topological Polar Surface Area:63.4 Heavy Atom Count::23 Defined Atom Stereocenter Count:0 Undefined Atom Stereocenter Count:0 Defined Bond Stereocenter Count:1 Undefined Bond...
foreach( LetterMap map in _maps ){ if( map.letter == _c ){ return map.subMaps; } } return null; } public bool Find( string _word ){ List<LetterMap> map = this.rootMap; foreach( char c in _word ){ map = CheckMap( c, map ); if( map == null ) return false; } return...
MEAs and fuel cells therefrom are well known in the art. One suitable embodiment is described herein. An ionomeric polymer membrane is used to form a MEA by combining it with a catalyst layer, comprising a catalyst such as platinum or platinum-cobalt alloy, which is unsupported or supported ...
3. at least one metal selected from the group consisting of palladium, platinum and nickel, and 4. at least one alkali metal. The alcohols obtained by the processes conducted in the presence of the above-mentioned catalysts have many applications. The high proportion of C2 -C6 alcohols thu...
An electrolytic cell is used to separate copper from the impurities, that is, zinc, iron, silver, gold, and platinum. Can this process be used to separate the metals left after the copper has been removed? The black tarnish that forms on pure silver is the sulfide Ag...
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platinum catalysts. Hydrogen chemisorption was used to determine the platinum dispersion of the Pt/Al2O3-SrCO3systems. The original method of synthesis allows to obtain highly dispersed and stable strontium carbonate phases that allow for obtaining a high (42–50%) dispersion of platinum ...