2 CHEMISTRY-RELATIVE ATOMIC MASSthe mass of a hydrogen atom 1/1H is equal to 1/12 of the mass of a carbon-12 atomso 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角度解释...
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...
HYDROGEN ATOM RECOMBINATION IN THE FLOW SYSTEM ATTACHED TO A MASS SPEC...not availabledoi:10.1139/v62-365Kebarle, PAvrahami, MCanadian Journal of Chemistry
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 a...
The mass of 1 mole of hydrogen is given as 1.008 grams. Step 2: Use Avogadro's number1 mole of any substance contains Avogadro's number of particles, which is approximately 6.022×1023 atoms. Step 3: Calculate the mass of one atom of hydrogenTo find the mass of a single atom of ...
A116 (mass of O2 molecules) B125 (mass of F2 molecules ) C112 (mass of one C-atom) D114 (mass of N2 molecules )Submit On atomic mass unit is equal to Amass of one atom of hydrogen Bmass of one atom of 6C12 C112 th of the mass of one atom of 6C12 Dnone of theseSubmit ...
where m(11H) is the mass of a hydrogen atom, mn is the mass of a neutron, and m (N, Z) is the mass of the atomic isotope AZX. Since the atom AZX has Z electrons, the rest energy of the electrons in Z hydrogen atoms is equal to the electronic contribution to m (N, Z)c2. ...
A lower bound value of 1.51, where is the mass of the electron, is obtained for the critical mass at which a hydrogen atom will just form a bound state with a positron. This is slightly above the previous best lower bound value obtained by Aronson, Kleinman, and Spruch. The method ...
Thus, the formation of deuterium from a neutron and a hydrogen atom would lead to the liberation of 214.6 × 106 kJ (51.3 × 106 kcal) for each mole of deuterium atoms formed. By comparison, then, the nuclear reaction leading to the formation of deuterium is approximately half a million ...