百度试题 结果1 题目If the formula of a chemical compound is H2O, how many oxygen atoms are there? A. 1 B. 2 C. D. 3 相关知识点: 试题来源: 解析 A。H2O 表示一个水分子,其中氧原子的数量是 1 个。反馈 收藏
Water is made up of two elements, hydrogen and oxygen. How many hydrogen atoms are there in one molecule of water? A. One B. Two C. Three D. Four 相关知识点: 试题来源: 解析 B。解析:一个水分子的化学式是H₂O,这表示一个水分子由两个氢原子和一个氧原子组成,所以答案是B。A选项一...
a出口巴西里约热内卢州 Exporta o estado Brazilian de Rio de Janeiro [translate] ahow many oxygen or hydrogen atoms are there in each molecule of your acid or base when it is dissolved in water 多少氧气或氢原子是那里在您的酸或基地每个分子,当它在水中被溶化 [translate] ...
Answer to: How many oxygen atoms are there in 3 g of sodium dichromate? By signing up, you'll get thousands of step-by-step solutions to your...
How many moles of atoms are in 4.63 x 10^21 Ca atoms?Question:How many moles of atoms are in 4.63 x 10^21 Ca atoms?The Mole:In chemistry, the mole is used for working with large numbers of atoms. Specifically, 1 mole of a substance contains 6.022×1023 atoms of the substance. This...
，原句为“子曰：“有教无类”。不管什么人都可以受到教育，不因为贫富、贵贱、智愚、善恶等原因把一些人排除在教育对象之外。此教育理念为孔子所倡导，在教育对象问题上，孔子明确提出了“有教无类”的思想。“有教无类”的意思是无分贵族与平民，不分国界与华夷，只要有心向学，都可以入学受教 ...
How many electrons are required by oxygen atom to attain nearest noble gas configuration ? A1 B2 C3 D4Submit Question 2 - Select One Assertion : In several properties, hydrogen resembles halogens of group 17. Reason : Both hydrogen and halogens are short of one electron to attain a stab...
hydrogn和氧原子可以在不同重量多少 翻译结果5复制译文编辑译文朗读译文返回顶部 Hydrogn和氧原子在多少可能变化他们称 相关内容 a优雅的伯爵 Graceful count[translate] a.Adenocarcinoma cells are mainly columnar. . 腺癌细胞主要柱状。[translate] a这些东西我们已经付过钱了,你们不用付了 These things we have ...
How many electrons are there in 1C?Charge:An atom is made up of electrons, protons, and neutrons. The positively charged nucleus is made of protons and neutrons whereas electrons revolve around the nucleus. The protons are positively charged and the electrons have an equal amount of negative ...
How many unpaired electrons are in a cu2+ ion? Electron Pairing Atoms and ions consist of electrons that occupy orbitals somewhere around the nucleus of the atom. Orbitals are spaces around the nucleus that an electron has the greatest likelihood of occupying. Different orbitals have different ene...