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 ...
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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...
Mole asked. "A show-off,my dear Mole," Badger explained, "is an animal who tries hard to impress others.He wants them to say, 'Oh,what a clever Toad!' and things like that.He's always up to something.If it's not one thing,it's another."...
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7. An explorer is a friend to all,be it a plant,a fish or a tiny mole. 探险家是所有东西的好朋友,不论是植物、鱼甚至是小鼹鼠。 8.Sometimes years go by between sightings. 岁月总是在寻觅中就消逝了。 9.Well,it's been a wonderful evening,but we'd better be going. ...
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 ...
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...
involves the use of another base unit: the kilogram. Therefore, the mass unit has to be defined prior to the mole unit. The definition proposed by Mills et al.4 and further discussed by Mills and Martin1disconnects the mole from the kilogram, which is one of the advantages of this ...
One mole is exactly 6.02214076×1023particles. The "particles" could be something small, like electrons or atoms, or something large, like elephants or stars. What Is a Mole? Like all units, a mole has to be defined or based on something reproducible. The present definition of the mole is...