apegylated pegylated[translate] a"Help me pull,"said Wilf. “帮助我拉扯, “Wilf说。[translate] ato begin with 开始与[translate] aa base is a substance that combines with these positively electrical protons 基地是与这些正面地电子氢核结合的物质[translate]...
aThus conclusive research must be undertaken before such an investment. 因而必须在这样投资之前承担决定性的研究。[translate] aboth sides of the streets 街道的双方[translate] aA Lewis base is a substance that donates an electron pair 刘易斯基地是捐赠一个电子对的物质[translate]...
A base is a substance that neutralizes an acid. A base which is soluble in water is called an alkali. 碱就是能中和酸的物质。注意base和alkali的区别。 另一种定义: A Bronsted-Lowry acid is a proton donor. 酸就是能提供氢离子(即质子)的物质。 A Bronsted-Lowry base is a proton acceptor. ...
A base is a substance that has a pH of over 7 on the pH scale. An acid is a substance with a pH that is less than 7. If a substance has a pH of 7, which is the pH of pure water, then it is called 'neutral' because it is not an acid or a base. ...
The more limited and older definition was that a base is a substance that dissolves in water and dissociates into a hydroxide or OH-ion and a positive ion. In the more general definition, a base is a substance that when dissolved in water increases the number of hydroxide ions. This defin...
a substance managemen a successful architec a successful girl - a successful marriage a succession of monta a sudden abrupt motio a suicide procedures a summer tale a summers disregard a sunny noon a sustainable organiz a sustained boom a sweet that melts on a swell at tennis a sword and nin...
aluminum alloy car bo aluminum alloy hub aluminum alloy struct aluminum base bearing aluminum boat aluminumcontainer aluminum extrusion cu aluminum powder paint aluminumprimer aluminum signal box alumin um silicone ba aluminum skirt aluminum thermal spra alumminum-rim aluspan alvaro always afloat always on...
百度试题 结果1 题目11 Which substance is a base? A Bahan manakah adalah bes? A Baking soda Serbuk penaik B Apple juice Jus epal C Soft drink Minuman ringan D Table salt Garam biasa 相关知识点: 试题来源: 解析 A 反馈 收藏
The substance that changes color in the presence of an acid or a base is called___. A. indicator B. reactor C. catalyst D. solvent 相关知识点: 试题来源: 解析 A。解析:在酸或碱存在时改变颜色的物质叫指示剂。选项 B 反应器不符合;选项 C 催化剂不改变颜色;选项 D 溶剂也不是变色的物质...
The substance that turns litmus paper red is___. A. an acid B. a base C. water D. salt 相关知识点: 试题来源: 解析 A。能使石蕊试纸变红的是酸。选项 B 碱使石蕊试纸变蓝;选项 C 水一般不会使石蕊试纸变色;选项 D 盐通常也不会使石蕊试纸变红。反馈...