In a chemistry class, we learn about H2O. What does “H2O” mean? A. Hydrogen Oxygen B. Hydrogen two Oxygen C. Hydrogen dioxide D. Water 相关知识点: 试题来源: 解析 D。H2O 是水的化学式,表示由两个氢原子和一个氧原子组成的水分子。选项 A、B 表述错误,选项 C 是二氧化氢,不是 H2O 的...
ayou mean give you the discount for the freight?right? vous élasticité moyenne vous l'escompte pour le fret ? droite ?[translate] aBefore the eight-foot distance is reached, each will signal in which direction he will pass. 在八英尺距离被到达之前,其中每一个在哪个方向将发信号他将通过。[...
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请在两个译文中选择较好的译文。我们的脑子也会发生“接触不良”的毛病的。例如安娜的丈夫名叫詹姆士·麦克达尔，原是纽约一个邮局的投递科长，1971年3月，他因连续两次在交通事故中受伤而失去了记忆，以后不知去向。( )
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What was it like when the Sun was born? What was it like when dark energy rose to prominence? What was it like when the Milky Way grew up? What was it like when the cosmic web formed? What was it like when the first living worlds formed? What was it like when the Universe...
What does "naur" mean and how do you use it? "Naur" is "no" spelled in an Australian accent. More accurately, it’s "no" spelled in what an Australian accentsounds like to Americans. "When you tell an Australian that there's an 'r' in the way we pronounce 'no' they're like ...
Cl2 in H2O gives you HCl and HClO. The HCl gains an electron (reduced) and the HClO loses an electron (oxidized) so the Cl is both reduced and oxidized in one equation. Hope that helps. Insert context header here: Insert context explanation here... Answer and Explanation: Become a ...
如果中介机构不讲信誉，她们就不可能提供真实的信息。为了使中介机构讲信誉，中介不能变成法定的垄断组织，也不应该是政府的附属。目前世界上比较权威的第三方认证机构，比如穆迪和惠誉都是私人性质的，不属于政府，原因就是第三方认证机构在信息披露的真实性和有效性方面远远强于政府。 这段文字告诉我们：
Calculate the density in g/cm3. If you have 100ml of water, what will the mass of the water be? What is the pressure 100 m below the surface of seawater of density 1,150 kg/m3? What does having a high mass per unit volume mean? What is density of water in g...