Hope that they will never like the album name as most red 现在, 2NE1一个新的册页(最普遍的I `M最佳)。 希望他们最不会喜欢册页名字作为红色 [translate] aA binary compound that is formed by oxygen and another element 由氧气和另一个元素形成的二元化合物 [translate] ...
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...
A binary compound of oxygen and an unknown element, X, has the formula XO and is 10.44 mass % oxygen. (a) What is the atomic weight of element X? u (b) What is the symbol for the element on the periodic table?...
Each element has a uniqueatomic number, which is the number of protons it has. This is how we identify one element from another. Theperiodic table of the elementslists all of the discovered elements and their atomic numbers. Examples of elements include oxygen (O), carbon (C), and gold (...
Elements are formed with the same types of atoms. For example, we are considering oxygen (O2). Oxygen is formed with two oxygen (O) atoms of the same kind, atomic number, and properties. Compounds are constructed with more than one type of atom. For example, we are taking water (H2O)...
百度试题 结果1 题目6 .Wate ri s acompound containin gth eelement sh and oxygen. 相关知识点: 试题来源: 解析 6 .Wate ri s acompoun dcontainin gth eelement sh hydrogen and oxygen. 反馈 收藏
The vapourised element, e.g. Mercury passes out of the diffuser into a quartz tube containing a gold mesh (33) with which it forms an amalgam. The amalgam is heated by induction (34), after the Oxygen supply has been cut off and the appts. has been purged with Argon (12), within...
Furan is an oxygen-containing heterocycle employed primarily for conversion to other substances (including pyrrole). Furfural, a close chemical relative of furan, is obtained from oat hulls and corncobs and is used in the production of intermediates fornylon.Thiophene, a sulfur heterocycle,resemblesbe...
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 ...
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 ...