mass = moles × molar mass C. molar mass = moles × mass D. moles = mass + molar mass 相关知识点: 试题来源: 解析 B。本题考查物质的量、质量和摩尔质量的关系。物质的量等于质量除以摩尔质量,即 mass = moles × molar mass。选项 A、C、D 关系错误。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...
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Atomic Mass and Molar Mass The periodic table lists the atomic mass and molar mass of each element. The values are the same, but their units are different. Atomic mass has the units atomic-mass-units, or AMU. Molar mass is the mass of one mole of the element, which is the mass of ...
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The molar mass of water is equivalent to the mass of one mole of water molecules. One mole is a scientific form of measurement in chemistry. Elements need to have equal amounts of protons and electrons to be stable, but they can vary in the amount of neutrons they contain. The amount ...
aI would older all the factories that pour the waste water into the river to close down 12月 [translate] athe relative molar mass of the polymer is thus the product of the relative molar mass of the repeat unit and the DP 聚合物的相对槽牙大量因而是重覆单位和DP的相对槽牙大量的产品 [...
Molar mass is the mass of 1 mole of in grams Na atoms Pb atoms Kr atoms Li atoms 1 mole 12 C atoms = 6.022 x 10 23 atoms = 12.00 g 1 mole 12 C atoms = 12.00 g 12 C 1 mole lithium atoms = 6.941 g of Li For any element atomic mass (amu) = molar mass (grams) 5 Mass ...
A related term is molar mass, which is the mass of 1 mol of a sample. Molar mass is given in units of grams. Sample Molecular Mass Calculation Molecular massmay be calculated bytaking the atomic mass of each element present and multiplying it by the number of atoms of that element in ...
Gram Molecular Mass:The gram molecular mass is the same idea as the molar mass of a substance. The periodic table lists all of the elements' molar masses. It is the average of all of the isotopes of that element.Answer and Explanation: ...