百度试题 结果1 题目12 The relative atomic mass of chlorine is 35.5.B What is the mass of 2 moles of chlorine gas? A 17.75g B 35.5g C 71g D 142g 相关知识点: 试题来源: 解析 B 反馈 收藏
The relative atomic mass of an element is defined as the weight in grams of the number of atoms of the element contained in 12.00 g of carbon-12. To calculate the relative atomic mass of chlorine, the average mass of one atom of chlorine is found by considering 100 atoms of chlorine. ...
We don't round it to a whole number because we want the number of the relative atomic mass of cholorine to be as precise as possible. We really care about the significant figures, so it's better if we get more digits.
A2 The table shows some information about three gases.name of gas formula relative molecular mass chlorine C71ammonia NH17HCI36.5(a) Complete the table by filling in the boxes.3(b) A student heated some solid ammonium chloride, NH.C/, in a test-tube. Ammoni a and one other gas were ...
Chlorine always exists as two isotopes .These ar CI-35 and CI-37 isotopes and are present in the ratio of 3:1 The atomic mass of the element is therefore fractional and is regarded as the relative atomic mass
relative molecular mass (abbr. Mr) 化学式量 relative formula mass 物质的量 amount of substance 阿伏加德罗常数 Avogadro constant (abbr. NA) 摩尔mole 摩尔质量 molar mass 实验式/最简式/经验式 empirical formula 气体摩尔体积 molar volume 阿伏加德罗定律 Avogadro’s Law ...
Relative + CN affinities of pairs of pyridines are smaller by ca. 1 kcal mol 1 than the corresponding Cl + affinities. Dimers in which one of the pyridines is meta -chlorine- or para -alkyl-substituted have the covalently bound, ring-carbon-substituted structure, in which the + CN group ...
Twitter Google Share on Facebook relative age [′rel·əd·iv ′āj] (geology) The geologic age of a fossil organism, rock, or geologic feature or event defined relative to other organisms, rocks, or features or events rather than in terms of years. ...
6 (a) An element X has an atomic number of 24 and a relative atomic mass of52.06. The natural element consists of four isotopes. The mass spectrum of the element X produced the following peaks of three of the isotopes on the chart recorder.Percentage83.804.302.4050 51 52 53 54 55 56 ...
Write the atomic mass, atomic weight and relative atomic mass of calcium View Solution What do you understand from the statement "relative atomic mass of sulphur is32∘? View Solution If a sample of copper contains69.1%of63 Cu of isotopic mass62.930u and30.9%of65Cuof isotopic mass64.298u....