Hydrogen peroxide is a/an ___. A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 B。过氧化氢是化合物。选项 A“element”是元素;选项 B“compound”是化合物,过氧化氢由氢和氧组成;选项 C“mixture”是混合物;选项 D“solution”是溶液。反馈 收藏 ...
it is essentially active in the same way that the ordinary atoms of the element are. For most elements, a change of one or of a few mass units is such a small percentage of the total mass that the chemical differences betweenisotopesare negligible. For hydrogen, however, chemical reactions...
One of these is by the introduction of catalysts (such as activated charcoal or various paramagnetic substances); another method is to apply an electrical discharge to the gas or to heat it to a high temperature. The concentration of para-hydrogen in a mixture that has achieved equilibrium ...
a source of a hydrogen catalyst comprising a reaction mixture of at least one reactant comprising the element or elements that form the catalyst and at least one other element, whereby the catalyst is formed from the source and the catalysis of atomic hydrogen releases energy in an amount great...
This process, considered as a ‘trick’ or ‘short cut’ to avoid the high energy requirements of ambient temperature water oxidation, does not come free of charge (as often stated). The energy saving obtained using such compounds is paid for by the chemical energy contained in the compound ...
Compound Is Canonicalized:True XLogP3-AA:434.08412 Monoisotopic Mass:434.08412 Complexity:368 Rotatable Bond Count:7 Hydrogen Bond Donor Count:2 Hydrogen Bond Acceptor Count:6 Topological Polar Surface Area:90.7 Heavy Atom Count::27 Defined Atom Stereocenter Count:0 Undefined Atom Stereocenter Count:1...
Hydrogenis the most abundant element in the universe. Hydrogen forms more chemical compounds than any other element. The most important compound of hydrogen is water. This chapter discusses the atomic and physical properties of the various forms of hydrogen. The chapter examines the various methods ...
Sodium hydrogen ferric DTPA, with the chemical formula C14H18FeN3NaO10 and CAS registry number 12389-75-2, is a compound known for its chelating properties. This compound is commonly used in medical imaging and as a treatment for heavy metal poisoning. Sodium hydrogen ferric DTPA acts as a ...
(magnetically) distinguishable proton in thecompound. Thus, proton magneticresonancemakes it possible to distinguish the structural types of hydrogen atoms present; furthermore, the absorption peak intensities are proportional to the number of hydrogen atoms of each kind. The absorption peaks are often ...
ZIRCONIUM(IV) HYDROGENPHOSPHATE, with the chemical formula H4O8P2Zr and CAS registry number 13772-29-7, is a compound known for its applications in various fields. This white crystalline solid is characterized by its zirconium and hydrogenphosphate components. It is commonly used as a catalyst ...