a我从中学到了很多东西,能力也有了很大地提升。 I from the middle school to very many things, ability also had have promoted very greatly.[translate] aTuve que ir a bailar 我必须去跳舞[translate] aWe use PayPal to process our transactions. PayPal is the global leader in online payments and ...
a他们的研究结果证实,上层大气中的氟氯化碳达到与氟氯化碳的想法,他们通过低层大气的旅程毫发无损一致款项 Their findings confirmed that, in the outer atmosphere fluorine chlorination carbon achieved with the fluorine chlorination carbon idea, they long and fine hair sends the lossless consistent fund throu...
a氟轻松 The fluorine is relaxed[translate] a不同的人对全球化有不同的观点和态度 The different person has the different viewpoint and the manner to the globalization[translate] aI write to tell u that i will take over his job from now on. Should u have any question, please contact me.It...
If atoms are so tiny, there must be zillions and zillions of them in all the things around us... but how many are there, exactly? Chemists have a handy way of talking amount these vast numbers of atoms—by using the rather unusual word mole. A mole of something (anything) has exactly...
aContact angle of the film surface with water was expected to increase with increasing amounts of fluoropolymer, which is incorporated to increase film hydrophobicity. The fluorine containing polyurethanes showed a reduction in surface-free energy. As seen in Fig.2, The water contact angle increases...
aColleagues in a timely manner to stop 同事及时地停止[translate] a还好我 Fortunately I[translate] afluorine 氟素[translate] aBut I fear it. . It makes me pain 正在翻译,请等待... [translate] a好的 祝你一路顺风 Good wishes your Bon Voyage[translate] ...
The danger here lies when these cable jackets are burned in the presence of moisture as would be present when fire extinguishing equipment such as emergency sprinklers have been activated. The addition of water to fluorine or chlorine gases produces: hydrofluoric (HFl) and hydrochloric acids (HCl...
Let’s consider hydrogen fluoride as an example. The electronegativity of fluorine is greater than hydrogen, and as a result, fluorine pulls all the electrons towards itself and becomes the negative pole. Hydrogen, in turn, has an excess of protons and becomes the positive pole. Such molecules...
Warming Mars up, however, and making it livable, are two very different things. Chris McKay, a prominent NASA scientist, told SpaceNews in 2015 that there remain several unknowns relevant to warming up the planet. "Mars does have enough water, tha...
What is the chemistry behind these elements to give them these qualities and make them react the way they do? 1. magnesium 2. calcium 3. potassium 4. sodium Electronegativity: Electronegativity is the measure of how stro...