hydrogen atom是原子核,质量为1.67*10^-27kg,electron是电子,质量为9.1*10^-31kg,问题是多少个电子和一个原子核质量相同,所以答案为1.67*10^-27kg/(9.1*10^-31kg)=1835个 查看完整答案 为你推荐 查看更多 一道物理题--物理牛人来! 不是Vt=23.6m/s和V0=19.6m/s,而是根据牛顿第二定律:T-mg=ma,求得...
3 CHEMISTRY-RELATIVE ATOMIC MASS the mass of a hydrogen atom 1/1H is equal to 1/12 of the mass of a carbon-12 atom, so its relative isotopic mass is 1.A magnesium atom 24/12Mg is twice as heavy as a carbon-12 atom,so its relative isotopic mass is 24 再给另一个例子 不要用英文...
What is the mass of a single hydrogen atom?Number of molesThe number of moles can be defined as the ratio of the given mass to the atomic mass, or it can be the ratio of the number of the particles to the Avogadro number.Answer and Explanation: ...
6 The :mass of an oxygen atom i 2.66*10^(-20) mill:grams and the mass of a hydrogen atom is1.67 × 10-12 picograes(a) Find the ratio of the mass of an oxygen atom to the mass of a hydtogen atom is its simplest form.(b) Find the total mass in kilograms of one oxygen...
atomic mass- (chemistry) the mass of an atom of a chemical element expressed in atomic mass units atomic weight,relative atomic mass 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 ...
¦−24¦ The probable mass of the hydrogen atom is 1.67314 gramdoi:10.1016/0026-265X(61)90073-XA.A.B.-PElsevier B.V.Microchemical Journal
1 The relative atomic mass of an element is always D A the mass of an atom of the element relative to z the mass of a carbon-12 atom. B the mass of an atom of the element relative to the mass of a hydrogen atom.□ C the weighted mean mass of an atom of the element relative ...
Hydrogen bonds are electrostatic interactions that occur when a hydrogen atom binds to an electronegative atom. Learn about chemical bonding, explore how hydrogen bonds form, discover the differences between intramolecular forces and intermolecular forces, then review an example of how these bonds are us...
Using a mass spectrometer, physicists have determined the mass of a hydrogen atom to be 1.660538921(73) × 10-27 kilograms, where the parenthetical digits are not known with complete certainty. That's accurate enough for most purposes. Good vibrations Another way that the mass of an atom can...
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 much everything. If one ...