百度试题 结果1 题目Which of the following is a compound? A. Oxygen B. Hydrogen C. Water D. Nitrogen 相关知识点: 试题来源: 解析 C。水(Water)是化合物。氧气(Oxygen)、氢气(Hydrogen)和氮气(Nitrogen)都是单质。反馈 收藏
aA compound is a substance that can be split into two or more elements. Water is a compound because it can be split into its components, hydrogen and oxygen. 化合物是可以被分裂成两个或多个元素的物质。 因为它可以被分裂成它的组分、氢和氧气,水是化合物。[translate]...
Hydrogen production from natural gas and heavier hydrocarbons is achieved by partial oxidation. A fuel-air or fuel-oxygen mixture is partially combusted, resulting in a hydrogen- and carbon monoxide-rich syngas. More hydrogen and carbon dioxide are then obtained from carbon monoxide (and water) vi...
7 Many organic compounds contain carbon, hydrogen and oxygen only.(a)An organic compound V has the following composition by mass.C48.65%;H,8.11%:O 43.24%Calculate the empirical formul a of compound V.empirical formula...(b)Compound W has the empirical formul a CH,O and a relative molecu...
Question 11An organic compound is known to contain only carbon, hydrogen and oxygen. The compound contains, by mass, 39.1% of carbon and 8.7% of hydrogen.The number of carbon atoms in the empirical formula is C A. I B. 2 C. 3 D. 4 ...
A compound contains only carbon,hydrogen,and oxygen.Combustion of 10.68 mg of the compound yields 16.01 mg CO2 and 4.37 mg H2O.The molar mass of the compound is 176.1 g/mol.What are the empirical and molecular formulas of the compound?(Type your answer using the format CO2 for CO2.)...
5 Compound F contains th e elements carbon, hydrogen and oxygen only. All carbon-carbon bonds in F ar e singl e bonds. Th e structur e of F was analysed by mass spectrometry and infra-red and NMR spectroscopy.(a)Th e mass spectrum shows that th e m/ e valu e for th e M ...
A process for preparing an aluminum-hydrogen-oxygen complex e.g. Al12(H2O2)18H6 capable of releasing oxygen and hydrogen in the presence of a halogen compound, when added to a fluid which contains oxygen and hydrogen comprises (1) contacting aluminum metal which contains at least trace amount...
18、It contained very littlehydrogenand helium.(它含有非常少的氢和氦。) 19、A molecule of water consists of two atoms ofhydrogenand one atom of oxygen.(水分子由两个氢原子和一个氧原子构成。) 20、Water is a compound containing the elements ofhydrogenand oxygen.(水是含有氢元素和氧元素的化合...