To provide a method for supplying iron content, supplying soluble iron content easily ingestible by aquatic plants such as marine alga and seaweed, into water for a long period, widely usable by using materials available in large quantity at a low cost, and applicable to a wide water area su...
解析 答案:how iron reacts with air and water.根据句意和所给部分句子可知show us后面是宾语从句,从句用how引导,语序是陈述句语序,短语react with和…反应. 它向我们展示铁是如何与空气、水起反应的.反馈 收藏
Iron is a mineral that naturally exists in water. The erosion of pool equipment adds iron to your pool, which affects the water quality. Corrosion occurs over time and is expedited by high chlorine and low pH levels. An overabundance of iron in pool water shows itself in the form of cloud...
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Similarly, if your water contains iron or manganese, orange or black stains can appear. Hard water, in particular, causes most water stains. Water “hardness” refers to its mineral content, especially magnesium and calcium. While water travels through layers of rock, it picks up trace amounts...
根据所学内容和下列文章的语境,填入合适的词语 Below is a description of a simple scientific experiment.It shows us how iron reacts with air and with water. Aim:To find out if iron rusts in water that has
Early cultures used meteorites to craft weapons and jewelry long before anyone knew how to extract iron from ore.
根据所学内容和下列文章的语境.填入合适的词语 Below is a description of a simple scientific experiment.It shows us how iron reacts with air and with water. Aim:To find out if iron rusts in water that has no air in it. Apparatus:3 clean iron nails; test
【小题2】What are necessary steps to make sure the water in the tube is air free?①Leave half a tube of water in it ②Boil the water for some time③Put some clean iron nails in the tube ④Add some oil to the water A.①② B.①③ C.②③ D.②④...
If the water is collected through a hole drilled into the source, it has to have exactly the same composition as the water in the surface spring. Well water: Well water is drawn from a protected well that taps directly into an unconfined aquifer. Of the basic types of bottled water, the...