试题来源: 解析 D The solution is a mixture of salt and water. 该方法利用盐溶于水而沙不溶的性质进行分离。第一步,将岩盐粉碎并加入温水,盐溶解形成盐水溶液,沙子则沉淀在底部。第二步,过滤将沙子与盐水溶液分离。第三步,蒸发水分,得到盐晶体。因此,溶液是盐和水的混合物,正确答案为D。
Rock salt is a mixture of salt and sand. Crystals of pure salt can be obtained from rock salt by using the method below.Use words from the box to complete the sentences.You may use each word once, more than once or not at all.(5)crystals dissolve evaporate filter solution solvent. ...
salt water is salt dissolved in water - in such a way that the salt no-longer exists as solid particles within the water. Suspensions - heterogeneous fluid mixtures containing solid particles large enough for sedimentation, which means that the particles (compared with the solute part of a ...
name three mixture found in nature . 01:13 which of the following is a mixture ? salt,Air,Water,Alum,sugar 02:11 Name one metal and non - metal which exist as liquids at room te... 01:39 name a metal which is soft and a non-metal which is hard. 00:58 Name a non-metal which...
nitrogen and brought toabout −5°C using an ice–salt/methanol bath (−10°C). A 1 M solution of 700 mL (0.70 mol) ofborane–tetrahydrofuran complex is cautiously added dropwise (rapid H2 evolution occurs)with rigorous temperature control to avoid an exothermic reaction. The ice–salt ...
Salt ___D_ when it is put in water. The mixture is called a solution.A. solvesB. disappearsC. mixesD. dissolves 相关知识点: 试题来源: 解析 D. dissolves 题目旨在考查盐在水中变化的正确动词。选项逐一分析如下:- **A. solves**:solve 意为“解决”,用于解决问题,与物质溶解无关,排除。- *...
1 A student tried to separate a mixture of salt and sand. Salt, sodium chloride, is soluble in water. Sand, silicon(IV) oxide, is insoluble in water. He added the mixture to water. Three sets of apparatus are shown.XX XXXXXXXXXXXXXX ×。A BC(a)Complete the boxes to identify the ...
The salt mixture, having a low sodium content, intended to be used as a substitute for cooking salt contains substantially potassium chloride and monobasic potassium phosphate components.BELOHLAWEK LOTHARWEBER WOLFGANGSCHULZE PAUL-EBERHARD
Shelled peanuts are coated in a syrupy mixture of brown sugar and flour, and then baked until they are light brown in color. 把去壳的花生裹上一层红糖和面粉混合的糖浆,然后烤制成浅棕色。 Peanut Brittle花生糖 This is another popular way to eat peanuts, especially during the Chinese New Year...
A robust password salt is quite similar to a strong password: it should be unique, long, complex, and impossible to predict. Here’s what to do to make sure your password salt is reliable: Make it random: Never use the dictionary words or users’ names as password salt. Make it complex...