The number of hydrogen atom: n=1 The expression for the number of mole for the hydrogen is {eq}\dfrac{m_H}{M} =...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough homework and study questions...
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...
Apply the same principles to calculate the molar mass of a molecule. The molar mass of water is the mass of one mole of H2O. Add together the atomic masses of all of the atoms of hydrogen and water in amolecule of water: 2 x 1.008 g (hydrogen) + 1 x 16.00 g (oxygen) = 18.02 ...
The sum of the atomic weights of the atoms contained in a molecule. For example, since the atomic weight of hydrogen is 1 and the atomic weight of oxygen is 16, the molecular weight of water (H2O) is 1 + 1 + 16, or 18.
The mole is an important concept for talking about a very large number of things — 6.02 x 1023 of them to be exact. This module shows how the mole, known as Avogadro’s number, is key to calculating quantities of atoms and molecules. It descr
The elements defined the atomic mass unit as '1/16th of the atomic weight of oxygen'. Apart from the fact that the term mass should have been used instead of weight, this definition does not specify which oxygen isotope, and implies the average mass of an oxygen atom in the mixture of ...
How could Avogadro and his colleagues determine the number of atoms in a given substance, or any quantitative property of a single atom, when the technology to observe individual atoms was not invented until the twentieth century? Pioneering scientists of the atom, such as ...
Mole Snacks: +304/-59 Re: Mass of a line of hydrogen atoms «Reply #5 on:April 29, 2019, 08:03:10 AM » As a side note,the radius of an atomis very ill-defined. Atoms themselves are fuzzy, and the distance between the nuclei depends on what nuclei, what bond, and pretty ...
This gave a different set of relative masses for the elements. The inadequacy of oxygen as an arbitary standard led to the selection of the carbon-12 isotope of carbon as the arbitary standard. The relative atomic mass of an element is defined as the weight in grams of the number of ...
mass - the property of a body that causes it to have weight in a gravitational field combining weight, eq, equivalent weight, equivalent - the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen meq, milliequi...