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 ...
One mole of dihydrogen, H2, is placed in a container and heated to 3000K. Some of the H2 dissociates to H because at this temperature there are more thermally accessible microstates in the 2 moles of H. (See the diagram relating to hydrogen microstates in the previous lesson. The above...
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...
Mole (Chemistry) (TerminologyTerms and phrases (EvaluationJeannin, YvesMills, Ian MInternationalunionofpureandappliedchemistryJeannin Y 2010 A fixed Avogadro constant or a fixed carbon-12 molar mass: which one to choose? Chem. Int. 32 (January-February) 8-10...
What Is Genetic Engineering? Technology What Is Solar Power? Biology What Is the Largest Predator That Ever Lived? Related Articles What Is Metallic Bonding? What is a Hydrogen Bond? What are Ionic Bonds? Discussion Comments All The Science, in your inbox ...
What is the molar mass of calcium hydroxide? What is the molar mass of hydrogen gas? What is the molar mass of chlorine gas? What is the molar mass of C3H8? What is the molar mass of calcium chloride? What is the molar mass of CO2?
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 and one oxygen atom with a weight of 16 g, meaning that one mole of water molecules weighs 18 g...
What is the total number of hydrogen atoms in one mole of CH_3OH? How many moles of chlorine are in 9.72 x 1019 molecules of CCl2F2? How many total atoms are in 1 mole of H2O? How many total atoms are in 7.47 moles of NH3? How many total atoms are in 0.212 mol...
An atom of Li has 3 electrons. Two electrons are removed, leaving the ion Li++. (a) What is the energy of the electron in the ground state of this hydrogen-like ion? (b) When the electron is in its second excited state, it can return to the ground state e ...