What chemical element is Se? What reaction fuses helium-4 into a stable heavier element? Which chemical element has the symbol Be? What element will be more reactive with another element? Explain. Which chemical element has the symbol As?
Chemical elements can be named after minerals. Which element is named after a mineral containing iron? A. Manganese B. Magnesium C. Mercury D. Molybdenum 相关知识点: 试题来源: 解析 A。锰(Manganese)是以一种含有铁的矿物命名的。镁(Magnesium)、汞(Mercury)、钼(Molybdenum)都不是以含有铁的矿...
Chemical elements can be named after planets. Which element is named after Uranus? A. Uranium B. Platinum C. Potassium D. Phosphorus 相关知识点: 试题来源: 解析 A。铀(Uranium)是以天王星(Uranus)命名的。铂(Platinum)、钾(Potassium)、磷(Phosphorus)都不是以行星命名。
Chemical elements may be named after famous scientists. Which element is named after Marie Curie? A. Curium B. Cadmium C. Calcium D. Carbon 相关知识点: 试题来源: 解析 A。锔(Curium)是以玛丽·居里(Marie Curie)和皮埃尔·居里(Pierre Curie)命名的。镉(Cadmium)、钙(Calcium)、碳(Carbon)都不是...
百度试题 结果1 题目Which chemical element is used in fertilizer? A. Potassium B. Sulfur C. Phosphorus D. Boron 相关知识点: 试题来源: 解析 C。磷在肥料中被广泛使用。钾也用于肥料但本题重点考查磷。硫和硼在其他方面有应用。反馈 收藏
When batteries are used to power electronic devices, which chemical element is usually involved? A. Nitrogen B. Lithium C. Phosphorus D. Fluorine 相关知识点: 试题来源: 解析 B。解析:锂电池是目前常用的电池类型,锂元素在电池中起到储存和释放电能的作用。氮主要是在空气中,不是电池中常用元素。磷和...
百度试题 题目The content of which chemical element is usually constant in a nucleic acid: _ A.CB.OC.ND.HE.P相关知识点: 试题来源: 解析 E 反馈 收藏
The red organic electroluminescence element which contains the chemical compound which is shown withPROBLEM TO BE SOLVED: To provide a new compound as a material for a red organic EL element and device, and make a EL device fit to the NTSC standard.陳 良吉...
【题文】 Carbon is a chemical element which is present in organic compounds that make us organisms, plants as well as fossil. It is a vital component of the greenhouse gas CO2, the highest percentage of the global warming gas in the atmosphere.These Green House Gases (GIIGs) along with ...
Some chemical elements are named after countries. Which element is named after France? A. 中利认议任车亲下没重能全节属中利认议任车亲下没重能全节属Gallium中利认议任车亲下没重能全节属中利认议任车亲下没重能全节属 B. 装斯阶科近书正相斗战委装斯阶科近书正相斗战委Germanium装斯阶科近...