A. Silicon atoms. B. Carbon atoms. C. Oxygen atoms. D. Hydrogen atoms. 相关知识点: 试题来源: 解析 B。解析:文章中明确提到“Graphene is an extremely thin and strong material. It is made up of a single layer of carbon atoms arranged in a hexagonal lattice.”,石墨烯是由一层碳原子组成...
Oxidation is one such reaction, and it occurs when it mixes with other elements and compounds. Oxygen also plays a role in combustion. There are several ways to extract pure oxygen. Water can be ionized, forcing the oxygen and hydrogen atoms to separate. More commonly, however, samples of ...
C. Three hydrogen atoms and one oxygen atom. D. One hydrogen atom and three oxygen atoms. 相关知识点: 试题来源: 解析 B。中文解析:文章中明确提到“Water is a compound made up of two hydrogen atoms and one oxygen atom.”,所以水是由两个氢原子和一个氧原子组成。
What is the mass of one oxygen atom in amu?What is the mass of one oxygen atom in gThe sample of hydrogen has a mass of 1.01 amu?How many hydrogen atom(s) equal to 1.01 amu?The sample of hydrogen has a mass of 1.01g,how many hydrogen atoms make up 1.01g? 扫码下载作业帮搜索答疑...
The four most abundant elements in the human body – hydrogen, oxygen, carbon and nitrogen – account for more than 99 per cent of the atoms inside you. They are found throughout your body, mostly as water but also as components of biomolecules such as proteins, fats, DNA and carbohydrates...
How Big Is an Atom? Atoms have great variations in weight, although they are all about the same size. The diameter of an atom is a million times smaller than one strand of thick human hair, very tiny indeed. The diameters of atoms range from approximately 0.1 to 0.5 nanometers. ...
What is the role of the oxygen atoms of the CuO chains in the high-Tc superconductivity of YBa2Cu3O7δ?high-T-C superconductorsthin filmscharge distribution in (1 2 3For the YBa2Cu3O7 and YBa2Cu3O6 systems ab initio Hartree-Fock cluster calculations have been performed using a self ...
If you keep taking things apart, you'll eventually, find that all matter (all the "stuff" that surrounds us) is made from different types of atoms. Living things, for example, are mostly made from the atoms carbon, hydrogen, and oxygen. These are just three of over 100 chemical ...
What is an oxygen deficit? Oxygen: For an aerobic organism, oxygen is an obligatory requirement. Depending upon aerobic organisms, a basal level of oxygen in the body must be always maintained. Answer and Explanation: 1 Become a Study.com member to unlock this answer! Create your account ...
In photosynthesis, what is the source of oxygen? A. water B. carbon dioxide C. sunlight D. chlorophyll 相关知识点: 试题来源: 解析 A。在光合作用中,氧气的来源是水(water)。二氧化碳(carbon dioxide)是光合作用的原料之一,但不是氧气的来源。太阳光(sunlight)是光合作用的能量来源。叶绿素(chlorophyll)...