49. A molecule of water is made up of two atoms of hydrogen and one atom of oxygen.(改为同义句) A molecule of water two atoms of hydrogen and one atom of oxygen 相关知识点: 试题来源: 解析 【答案】consistsof【核心短语/词汇】bemadeupof 由...组成【翻译】一个水分子是由两个氢原子和...
aWater is a very simple molecule (two hydrogen atoms combined with one oxygen atom), but that simple combination allows the emergence of exceptional properties that have made water the most important solvent on earth and an essential support to the development of life. [translate] ...
Triethylamine [(CH3CH2)3N] is a molecule in which the nitrogen atom is ___ hybridized and the CNC bond angle is ___. () A sp2; >109.5° B sp2; C sp3; >109.5° D sp3; E sp; 109.5° 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
A molecule's molecular weight is the sum of all its constituent atoms' atomic weights. Avogadro's number (6.02214076 × 1023) is the number of molecules that constitutes the atomic weight of a molecule in grams (g). For example, water is two hydrogen atoms with a weight of 1 g each an...
In an H2 molecule, the atoms are held together by: A. covalent nonpolar bonds B. ionic bonds C. hydrogen bonds D. covalent polar bonds A hydrogen bond is ___. A. an ionic bond between H and another atom. B. the polar O H bond in water. C. an ...
1. The total energy of an atom or molecule is due to many energetic contributions, both kinetic and potential. Consider a beryllium atom as an example. My drawing below identifies the motions and interactions and how many of each - that con...
结果1 题目 Water is composed of two atoms of hydrogen and one atom of oxygen per molecule, which represents11.2 percent hydrogen and 88.8 percent oxygen by ().A.waterB.massC.heatD.volume 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
In particular, analysis of the electron–positron pair density function shows that positronium hydride has not only an atomic structure with a positron added to a hydrogen negative ion, but also a diatomic molecular structure which consists of a hydrogen atom and a positronium....
What is an atom in a molecule? J Phys Chem A The derivation of the Hirshfeld atoms in molecules from information theory is clarified. The importance for chemistry of the concept of atoms in molecules (AIM) is stressed, and it is argued that this concept, while highly useful, consti... ...
The hydrogen molecule, consisting of two hydrogen atoms, can be used to produce carbon-free energy. Hydrogen molecules carry a lot of energy; a pound of hydrogen contains almost three times the energy of a pound of gasoline or diesel. ...