What is the mass number of titanium? Atomic Number: Each element on the periodic table has two important numbers, the atomic number and the mass number. The atomic number is equal to the number of protons and the mass number is equal to the mass of one atom in atomic mass units (amu)...
这里主要取决于 the mass of这个词组里的the，虽然意思为“大量的”，但它后面的名词接的是单数形式，但如果是a mass of其后就接的是复数名词了！
Why would the atomic number be better to identify an element than the atomic mass? How are atomic numbers and mass numbers written? What is counted in an atom to determine mass number? What is the difference between a dalton (u) and an atomic mass unit (amu)?
One atomic mass unit (amu) is equal to 1/12 the mass of the isotopes of carbon, i.e., C-12 atom. Answer and Explanation:1 There are many elements that exist in nature in the form of isotopes. Isotopes of an elements ...
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...
Chemistry Examples Tocalculatethemassof a singleatom, first look up theatomic massoffrom theperiodic table. This is also themassingramsof 1moleof. Use Avogadro's number to find themassof a singleatom. Simplify theexpression. Tap for more steps......
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...
If the mass of a hydrogen atom is 1.67*10^-27kg and the mass of an electron is 9.1*10^-31kg,how many electrons would be required to have a mass equivalent to one hydrogen atom? 下载作业帮APP学习辅导没烦恼 答案解析 结果1 举报 这道题的意思是一个氢原子的质量是1.67*10^-27kg ,一个...
The atomic weight of an atom, or the molecular weight of a molecule, is its mass relative to that of a(n) ___ atom. This is essentially equal to the number of protons plus neutrons that the atom or molecule contains.的答案是什么.用刷刷题APP,拍照搜索
An atom is the smallest unchangeable component of a chemical element. Unchangeable means in this case by chemical means; i.e., by reactions with acids or bases or the effect of moderate temperatures, atoms may only be slightly changed, namely, in their degree of ionisation. Moderate ...