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。反馈 收藏 ...
The nucleus of an atom: Each atom has a nucleus at approximately the centre of its volume consisting of the two types of particles called protons and neutrons. Protons and neutrons are known collectively as nucleons. Neutrons have no charge and protons have a charge of +1 (that is, they ...
What is the average mass of a single silicon atom in grams? What is the definition of atomic size in chemistry? An atom has 20 electrons and 20 neutrons. What is the mass of this atom? What is an atom? How many hydrogen atoms would have the same mass as one calci...
The hydrogen atom is the first chemical element on the table of periodic elements. Its symbol is H and is the lightest element. In its neutral charged state, it is composed of one positively charged proton, one neutrally charged neutron, and a negatively charged electron....
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...
(ii) The first excitation energy of the hydrogen atom is 10.2 eV.Explain what is meant by this statement. 相关知识点: 试题来源: 解析 The energy required by the hydrogen atom for it to transit from the ground state to its first excited state is 10.2eV. ...
Most of an atom is empty space. If an atom were about as big as a baseball stadium, the nucleus would be the size of a pea in the very center and the electrons would be somewhere on the outside edge.What makes an atom of gold different from an atom of iron is the number of ...
In this Science 101 video, scientists Debolina Dasgupta and Nancy Kariuki describe the science, technology, and applications of hydrogen energy. Hydrogen is the simplest chemical element, or type ofatom, and an abundance of hydrogen exists within the water on our planet. It is naturally renewed ...
1. Identify the Energy Formula: The energy of an electron in the nth orbit of a hydrogen atom is given by the formula: En=−13.6eVn2 2. Determine n for the 3rd Excited State: The 3rd excited state corresponds to n=4 (since the ground state is n=1, the first excited state is ...
So, the process uses HCl and H2O2.What occurs in reality, however, is WAY more complex than the simple equation suggests. Copper chemistry is remarkably complex. Just to give you an idea, the chloride ions play an important role in this reaction. E.g. if you do the same with hydrogen ...