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！
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 ...
amuatomicatom原子unitsatoms 1 By definition: 1 atom 12 C “weighs” 12 amu On this scale 1 H = 1.008 amu 16 O = 16.00 amu Atomic mass is the mass of an atom in atomic mass units (amu) Micro World atoms & molecules Laboratory scale measurements No matter what its source, a particula...
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...
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...
[translate] aThe atomic mass of an element indicates how heavy, on average, an atom of an element is when compared to an atom of another element 元素的原子质量表明多么重,平均,元素的原子是,当与另一个元素时原子比较 [translate] 英语翻译 日语翻译 韩语翻译 德语翻译 法语翻译 俄语翻译 阿拉伯语...
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......
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
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...
Next, the beam was sent to the Low Energy Beam and Ion Trap (LEBIT) facility, where the ions were injected into a device known as a Penning trap, which uses electric and magnetic fields to store the ions in space. The researchers then measured the mass of the ions with high precision...