例如Test for chloride ion: excess nitric acid is added to the sample solution followed by silver nitrate solution. Nitric acid 在此是要消耗样本中可能干扰试验结果的物质，例如hydroxide ion sulfite ion carbonate ion 之类； 确保之后加入silver nitrate 时万一产生白色沉淀物(white preci...
What does "dilute" mean in Engpsh A. 活门 B. 水泵 C. 冲淡 D. 表明 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: C 复制 纠错 举一反三 某厂有一个地下池,池内有两个二硫化碳储罐,其中一个进料口阀门损坏,车间主任带两名工人下池...
ahow can we get to the holiday hotel.please? 我们怎么可以有假日hotel.please ?[translate] aDissolve 1.0 g in 12 ml of acetone R and dilute to 20 ml with water R. 12 ml of this solution complies with test B. Prepare the reference solution using lead standard solution (1 ppm Pb) obtai...
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Economics does not naturally lend itself to scientifichypothesis testingas does physics. In the field of epistemology, scientists can learn through logical thought experiments, also called deduction, or through empirical observation and testing, also called positivism. Geometry is a logically deductive sci...
What Does Leverage Mean in Finance? Leverage is the use of debt to make investments. The goal is to generate a higher return than the cost of borrowing. If a company fails to do that, it is neither doing a good job nor creating value for shareholders. ...
PPB (parts per billion)- typically used to express contamination of dilute solutions Some units may be converted from one to another. However, it's not always a good idea to convert between units based on the volume of solution to those based on mass of solution (or vice versa) because ...
What is the percent concentration of a 300 mM solution of CaCl_2? How would you dilute a NaCl solution that has an initial concentration of 15% (w/v) to a 50 ml... 1 answer below How would you dilute a NaCl solution that has an initial concentration of 15% (w/v) t ...
Unlike sanitizing, disinfecting won't be a super common part of your cleaning routine. It's really meant for serious messes like those involving bodily fluids, making it more common in medical settings. What does it mean for your household cleaning? You'll likely want to disinfect things like...
What is the purpose of adding 40% NaOH solution to the tin reduction mixture ? Explain how you could prepare 1.0 L of a 0.02 M Na2CO3 solution. Why is the carbonate solution boiled before titrating? If red litmus paper turns blue in the substance, what does it mean?