A) PoB) PtC) KD) Ka 相关知识点: 试题来源: 解析 C 题目问的是钾(Potassium)的化学符号,需从四个选项中选出正确的。 1. **选项A (Po)**:Po代表钋(Polonium),由居里夫妇发现,与钾无关。 2. **选项B (Pt)**:Pt是铂(Platinum)的符号,用于贵金属材料,与钾无关。 3. **选项C (K)**:钾...
To be sure potassium chloride is helping your condition, your blood may need to be tested often. Your heart rate may also be checked using an electrocardiograph or ECG (sometimes called an EKG) to measure electrical activity of the heart. T
A. sodium chloride B. potassium chloride C. calcium chloride D. magnesium chloride 相关知识点: 试题来源: 解析 A。食盐的主要成分是氯化钠,即 sodium chloride。选项 B 是氯化钾,选项 C 是氯化钙,选项 D 是氯化镁。所以答案是 sodium chloride。反馈...
What is potassium sulfite's formula?Facts About Potassium SulfitePotassium sulfite is a chemical compound that is often added to foods to help keep them fresh. It is made by combining three different elements to make a new substance.Answer and Explanation: ...
Measurements of the concentration of extracellular potassium ions in the course of such light-induced seizures indicated that the observed low values of the concentration of calcium ions could not be ascribed to the occurrence of spreading depressions. These findings showed that nonsynaptic mechanisms ...
Four types of xanthates (ethyl, butyl, propyl and amyl) are produced in various combinations with sodium and potassium, which are stabilizers in the chemical formula. The key reagent is carbon disulphide. A special plant must be built for its production, in other words, a xanthate manufacturer...
Plant roots integrate environmental signals with development using exquisite spatiotemporal control. This is apparent in the deposition of suberin, an apoplastic diffusion barrier, which regulates flow of water, solutes and gases, and is environmentally
Ethanolic potassium hydroxide is a solution of potassium hydroxide in ethanol. Potassium hydroxide is an inorganic, chemical compound made of one potassium atom bonded to an oxygen atom, which is itself bonded to a hydrogen atom. Ethanol is an alcohol. ...
In the food industry, Potassium pyrophosphate is used as an emulsifier, quality modifier, chelating agent, and to help improve the taste of cakes and pastries.
An organic compound 'X' is a constituent of wine. On heating with acidified potassium dichromate it gives a compound 'Y' which gives brisk effervescence with sodium bicarbonate. Identify 'X' and 'Y'. Give the chemical equations involved in the reactions. ...