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...
How many oxygen atoms are there in {eq}3 \ g {/eq} of sodium dichromate?Question:How many oxygen atoms are there in {eq}3 \ g {/eq} of sodium dichromate?Dichromate Ion:Dichromate is a divalent polyatomic anion, which means that it is a negatively-charge ion comprised of more than ...
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] ...
How many protons does deuterium have? How many atoms are there in 16 grams of oxygen? What property of water is due to hydrogen bonds? How many sp hybridized atoms are in the molecule? How many oxygen atoms are there in a molecule of ozone? Select the correct number of Hydrogen atoms ...
Poor absorption or permeation of a compound is more likely when there are >5 hydrogen bond donors, the molecular mass is >500, cLogP is >5, and the sum of nitrogen and oxygen atoms in a molecule is greater than 10. Many drugs, however, are exceptions to the rule-of-five, and often...
How many atoms are there in a 0.289-mole sample of sulfur?Question:How many atoms are there in a 0.289-mole sample of sulfur?Chemical Formula:The chemical formula is the formula of a compound in which: We can see which atoms for a certain molecule. Also, we can determine the number...
For many years, scientists couldn’t figure out how atoms and molecules combined to make living things. Plants, fish, dinosaurs, and people are made of atoms and molecules, but they are put together in a more complicated way than the molecules in the primitive ocean. What’s more, living ...
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 elements do we have 2020? There are118known periodic table elements. Are there 114 or 118 elements? The permanent names for elements 113, 115,117, and 118are nihonium, moscovium, tennessine, and oganesson. IUPAC officially recognized the elements at the end of 2015. ...