【题目】The atomic weight of oxygen is___than ___of the hydrogen. A. 15 times heavier; that B. 15 times heavier: those C. 16 times as heavier; that D. 16 times as heavy; those试题答案 在线课程 【答案】A 【解析】 试题分析:考查倍数表达法。句意:氧原子是氢原子重量的16倍。is 16...
R. (2003). “Edward Williams Morley and the Atomic Weight of Oxygen: The Death of Prout's Hypothesis Revisited.” Annals of Science 60: 351–372.Hamerla, R. R. (2003) “Edward Williams Morley and the Atomic Weight of Oxygen: The Death of Prout's Hypothesis Revisited.”. Annals of ...
THE discovery of the complexity of oxygen clearly necessitates a reconsideration of the scale on which we express the weights of atoms. Owing to the occurrence of Oand O, now generally accepted, it follows that the mean atomic weight of this element, the present chemical standard, is slightly...
With the exception of hydrogen, no atomic weight is less than 2x, if the atomic weight of oxygen is taken as the standard. There is, accordingly, some justification for treating the atomic weights of helium, boron, carbon, nitrogen, oxygen, and fluorine as normal and that of hydrogen as ...
combining weight,eq,equivalent weight,equivalent- the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen meq,milliequivalent- one-thousandth of an equivalent
Atomic weight definition: the average weight of an atom of an element, formerly based on the weight of one hydrogen atom taken as a unit or on 1/16 (0.0625) the weight of an oxygen atom, but after 1961 based on 1/12 the weight of the carbon-12 atom. Abbr
The average atomic mass of oxygen is 15.999 AMU. This value rounds to 16, which indicates that oxygen-16 is the most abundant isotope of oxygen...Become a member and unlock all Study Answers Try it risk-free for 30 days Try it risk-free Ask a question Our experts can answer your ...
Notes 1 H Hydrogen 1.00794(7) 1, 2, 3 2 He Helium 4.002602(2) 1, 2 3 Li Lithium [6.941(2)] 1, 2, 3, 4 4 Be Beryllium 9.012182(3) 5 B Boron 10.811(7) 1, 2, 3 6 C Carbon 12.0107(8) 1, 2 7 N Nitrogen 14.0067(2) 1, 2 8 O Oxygen 15.9994(3) 1, 2 9 F ...