A. element B. compound C. mixture D. solution 相关知识点: 试题来源: 解析 B。水是由氢元素和氧元素组成的化合物。选项 A“element”是元素;选项 B“compound”是化合物,水是化合物;选项 C“mixture”是混合物;选项 D“solution”是溶液。
Question: Is water heterogeneous or homogeneous? Water Water is a compound that is made from atoms of hydrogen and oxygen combining with each other. Water is one of our most important resources and is necessary for life. Answer and Explanation: ...
PURPOSE: To provide a photographic element containing a disulfide compound having a combined property of high water solubility and strong fogging preven tive activity.JIEEJII ANTONII BUTSUZUジェージー アントニー ブッズJIYOOJI JIYON BAAGUMEIAA...
Which of the following is an example of an organic compound found in the human body? a) Water b) Protein c) Oxygen d) Carbon Dioxide What are Organic Compounds? An organic compound is a carbon-containing molecule held togethe...
Which of the following is not an element? (a) Hydrogen (b) Carbon (c) Oxygen (d) Water Atoms and Molecules: Atom is the basic unit of matter in the universe. It shows all the properties of a particular type of matter. Molecules are different combinations of ato...
If the outdoor heat exchanger is combined with the domestic water heat exchanger, a special compound heat exchanger should be employed to absorb the air heat for the common space heating mode and an additional heat source should be employed for water heating in winter time. If the indoor heat...
as a N element source [49]. All ingredients were well blended and then composted in a pile measuring 25 × 2 × 1.6 m (length x width x height). The pile was turned over four times a month during the bio-oxidation stage and regularly sprinkled with water to maintain a 60%...
Evaporation, process by which an element or compound transitions from its liquid state to its gaseous state below its boiling temperature. It is also how liquid water enters the atmosphere as water vapor, which is an important part of energy exchange tha
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Second, to simulate the LCNEWP process, we analyzed the heat transfer and shape evolution of a NEWP during LCNEWP using finite element analysis (Fig.2c, d, Supplementary Movies1–2). Upon laser exposure, SiO2NPs around the laser irradiation point absorb laser energy, and their temperature gra...