37. What happens when one mole of ethane is mixed in the dark at room temperature with six moles of chlor ine gas? A. There is no reaction. B. Only C2Cs are formed. C. C2Cls and HCI are formed. D. CH3CH2CI and HCI are formed. 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
The molar mass of a substance is the mass of one mole of that substance. What is the unit of molar mass? A. g/mol B. mol/g C. L/mol D. mol/L 相关知识点: 试题来源: 解析 A。本题考查摩尔质量的单位。摩尔质量是指单位物质的量的物质所具有的质量,单位是克每摩尔(g/mol)。选项 B ...
What is the formula of the compound formed from the cation NH4+ and the anion ClO3-? What is the formula of the compound formed from the cation NH4+ and the anion OH-? What is the formula of the compound formed from the cation Pb4+...
What is a mole in chemistry definition? mole, also spelled mol, in chemistry,a standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, or other specified particles. ... In comparison, one mole of oxygen consists, by definition, of the same num...
Cleverly, the mass of one mole of a substance relates to the individual mass number of the atoms in that substance. For example, one mole ofoxygenhas a mass of 16 grams. This is because the most common type of oxygen atom contains eight protons, eight neutrons, and eight electrons, and...
What is the mole-to-mole ratio between oxygen gas and water? The reaction is 2C8H18+25O2→16CO2+18H2O. Stoichiometry:In stoichiometry, the balanced chemical equation gives the molar ratio of products and reactants required for the reaction...
What is the mass of(a)6x10^23 atoms of O(b)6x10^23 atoms of O2(c)one mole of carbon dioxide,CO2(d)two mole of silver,Ag(e)0.2 moles of silver,Ag 相关知识点: 试题来源: 解析 a)6x10^23即是1mol,即1mol原子的氧元素.质量为16*1=16g b)1mol氧原子的氧气质量为 16*1=16g c...
Step-by-Step Text Solution:1. Definition of a Mole: A mole is defined as the amount of a substance that contains exactly \(6.022 \times 10^{23}\) elementary entities of that substance.2. Under
Now you can use the coefficients in front of ozone and oxygen to find the mole ratio. The ratio is 2 ozone to 3 oxygen, or 2:3. How do you use this? Let's say you are asked to find how many grams of oxygen are produced when you react 0.2 grams of ozone. ...
[转]What If..[What if]第4期——1摩尔的鼹鼠原作: http://what-if.xkcd.com/4/翻译:Ent如果收集一摩尔的鼹鼠,全部放在一个地方,会发生什么呢(#英文里摩尔和鼹鼠都是mole这个