百度试题 结果1 题目What is the atomic number of carbon? A. 6 B. 8 C. 12 D. 14 相关知识点: 试题来源: 解析 A。解析:碳的原子序数是6。选项B,8是氧的原子序数。选项C,12是碳的相对原子质量。选项D,14是硅的原子序数。反馈 收藏
The atomic mass is the mass of an atom. Although the SI unit of mass is the kilogram, the atomic mass is often expressed in the non SI-unit dalton, where one dalton is defined 1/12 of the mass of a single carbon-12 atom, at rest. The protons an...
Sumo Logic is enhancing the trial onboarding process with the introduction of pre-loaded sample data, allowing new users to immediately engage with the platform's features without the initial need to provide their own data. This streamlined experience is designed to demonstrate the value of Sumo L...
It has six protons, six electrons, and six neutrons, so its atomic number is 6 and its relative atomic mass is 12. But there's also another form of carbon called carbon-14, with six protons, six electrons, and eight neutrons. It still has an atomic number of six, but its relative ...
Avogadro's Constant refers to the number of particles in one mole of substance (6.02214076×10²³ mol⁻¹), expressed with units, while Avogadro's Number is the dimensionless value of this constant, approximately 6.022×10²³. ...
They would also be impossible to counterfeit, since nothing else that’s really usable would be heavy enough. The only other metal challenging its weight is osmium, but as it’s similarly rare nothing would be gained. Moreover osmium presents a hazard in the machine shop iridium doesn't: ...
This is a label that gets used to specifically denote when a molecule is composed of at least two different elements. Methane, for example, is a greenhouse gas that has received a great deal of attention in recent years. Methane has the chemical formula CH4, and consists of one carbon ato...
Conversely, lipid-core nanocapsules, silver nanoparticles and carbon nanotubes do not seem to increase sperm DNA fragmentation even at high doses despite their ability to penetrate cells. In the end, it is legitimate to question the relevance of a mature sperm model in the context of repro...
No vehicle is more closely associated with 1960s counterculture as theVW microbus, a frequent sightat the Woodstock music festival in 1969. The easily adaptable vehicle has appeared in many films, among them Oscar winners “Little Miss Sunshine” and “Argo.” It was also the vehicle o...