Oxygen is a/an ___. A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 A。氧是一种元素。选项 A“element”是元素,氧是元素;选项 B“compound”是化合物;选项 C“mixture”是混合物;选项 D“solution”是溶液。反馈...
In which of the following compounds, an element exhibits two different oxidation states? View Solution In which of the following compounds, an elements exhibits two different oxidation states? View Solution Exams IIT JEE NEET UP Board Bihar Board ...
PROBLEM TO BE SOLVED: To provide a compound for an organic EL element, providing an emission brightness and a driving life sufficient when used as a constituent material of the organic EL element, and sufficiently reducing the driving voltage; and to provide the organic EL element using the com...
Lignin : Complex oxygen - containingorganic compound, a mixture of polymers of poorly known structure. 木质素: 一种复杂的 含氧 有机物, 是结构尚不清楚的多种聚合物的混合物. 互联网 展开全部 英英释义 Noun 1. any compound of carbon and another element or a radical ...
may be combined to form a ring with adjacent two carbon atoms, in the presence of oxygen and a catalytic compound of a Group 5, 6, 7, 8 or 9 element of the Periodic Table of Elements to yield a compound of following Formula (3) or (8): wherein Z is a hydrogen atom or a hyd...
Veera Gnaneswar Gude, in Progress and Recent Trends in Microbial Fuel Cells, 2018 18.4.2 Nutrient Removal Nitrogen compounds in the form of nitrates and nitrites were considered in lieu of oxygen due to their competitive redox potential. Abiotic and biological cathodes were studied. An abiotic ca...
Oxides can be defined as binary compounds formed between elements, and oxygen and phosphates can be defined as salts based formally on phosphorus (V)oxoacidsand in particular salts of phosphoric (V) acid, H3PO4. Both, oxides and phosphates, are among the most important classes ofinorganic com...
Viscosity of a liquid crystal composition can be remarkably decreased by the addition of said compound and the driving voltage of a liquid crystal display element can be lowered by the use of the liquid crystal composition. PREPARATION:For example, a compound of formula I wherein A is CH2CH2 ...
A compound whose empirical formula is XF3 consists of 65% F by mass. What is the element X? Compound X has a molar mass of 180.15 g.mol-1 and the following composition Element Mass% Carbon 40.00% Hydrogen 6.71...
Nitrogen is an essential element of life that needs to be assimilated in its most reduced form, ammonium. On the other hand, nitrogen exists in a multitude of oxidation states and, consequently, nitrogen compounds (NCs) serve as electron donor and/or acceptors in many catabolic pathways includin...