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...
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...
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] ...
Radioactive. Some atoms have too many neutrons in the nucleus, which makes them unstable. ... Ions. ... Antimatter. Are humans made of atoms? About 99 percent of your body is made upof atoms of hydrogen, carbon, nitrogen and oxygen. You also contain much smaller amounts of the other...
How many atoms are in a human? It is hard to grasp just how small the atoms that make up your body are until you take a look at the sheer number of them. An adult is made up of around7,000,000,000,000,000,000,000,000,000 (7 octillion) atoms. ...
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 hydrogen atoms would have the same mass as one calcium atom? How many valence electrons does Hydrogen have? How many bonds does selenium have with hydrogen? How many atoms can be on one element? How many atoms are in oxygen? How do hydrogen bonds between water molecules occur?
Science Chemistry Molar mass How many grams of oxygen are in 1.8 moles of glucose?Question:How many grams of oxygen are in 1.8 moles of glucose?Molecular Formulas:The molecular formula of a compound is the chemical formula for molecular compounds. It gives the number of atoms of each ...
1【题目】For many years, scientists couldn't figure outhow atoms and molecules on the Earth 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. ...