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 ...
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 mass of(a)6x1023 atoms of O(b)6x1023atoms 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)6x1023即是1mol,即1mol原子的氧元素.质量为16×1=16gb)1mol氧原子的氧气质量为 16×1=16gc)1mol的CO2 ...
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. ...
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What is the difference between moles and grams? Answer and Explanation: A mole is a shorthand way of counting with Avogadro's number. One mole is equal to 6.02 X 10^23. A gram is a unit of mass. One mole of something can weigh 1 gram or 1,000,000 grams, but that mole will be...
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...
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Look up the atomic masses of carbon and oxygen. This is the number of grams per mole of atoms. Carbon (C) has 12.01 grams per mole. Oxygen (O) has 16.00 grams per mole. One molecule ofcarbon dioxidecontains 1 carbon atom and 2 oxygen atoms, so: ...