In chemistry, a mixture is defined as the combination of two or more substances. The substances must retain their individual chemical identities in order for the combination to be considered a mixture. For example, sugar water is a mixture of water, {eq}\rm H_2O {/eq...
Why is it so vital for sugar to be transported from the blood vessels to the cells of the body? Why do you need to test for glucose in the solutions? What does the presence of glucose indicate for the reaction? Discuss why water will always move from a hypotonic solution to a hypertoni...
Concentrated sulphuric acid is hygroscopic liquid. It readily absorbs moisture from the atmosphere and gets diluted. That is why it is kept in air tight bottles.
by detecting the presence of free aldehyde or ketone groups. The Benedict's test heats a mixture of Benedict's reagent (a deep-blue alkaline solution) and sugar. If a reducing sugar is present, the reagent changes color: from green to dark red or rusty-brown, depending on the quantity an...
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答案为A。 3.B 【解析】 细节理解题。 根据短文第三段"Plants use sunlight to turn water and CO2 into glucose. Glucose is a kind of sugar"可知植物可以把水和二氧化碳转化成葡萄糖,故 答案为 B 。 4.C 【解析】细节理解题。 根据短文第三段中的句子"As the green chlorophyll disappears from the ...
A mixture of lemon essential oil combined with eucalyptus, melaleuca,lemongrass, clove leaf, and thyme, in a 40 percent ethanol base, demonstrated anti-tumorigenic effects when administered to patients with metastatic tumorigenic ulcers. Cancer patients have also found relief from pain, anxiety, nausea...
Blood sugar is regulated primarily by insulin. Our body temperature is regulated by our thyroid hormones and so on. But we believe that we can grow endlessly fat. The pathways by which we gain weight are numerous and not completely known yet. New hormones regulating our weight are discovered...
Next, pour some powdered sugar into the plate so it will be ready to use later.Now here is where the fun begins! Put the butter into the mixing bowl and add the sugar, then mix them with the wooden spoon. After they are mixed, add the water and mix them again. Finally,you add ...
What is the mixture of nitric acid and Sulphuric acid called? NITRATING ACID, MIXTURE, (WITH <= 50% NITRIC ACID) is a mixture of nitric with sulfuric acids. Reacts as a strong acid. When conc h2so4 comes in contact with sugar it becomes black due to?