The chemical formula for rust is mainly _. A. FeO B. Fe₂O₃ C. Fe₃O₄ D. Fe(OH)₂ 相关知识点: 试题来源: 解析 B。解析:铁锈的主要化学成分是三氧化二铁(Fe₂O₃)。在化学中,“chemical formula”表示化学式,FeO是氧化亚铁,Fe₃O₄是四氧化三铁,Fe(OH)₂是氢氧化亚铁...
Rust is another name for iron oxide, which occurs when iron or an alloy that contains iron, like steel, is exposed to oxygen and moisture for a long period of time. Over time, the oxygen combines with the metal at an atomic level, forming a new compound called an oxide and weakening ...
When iron rusts, it is a chemical change. What happens during this process? A. The color remains the same. B. No chemical reaction occurs. C. A new substance is formed. D. The mass of iron decreases. 相关知识点: 试题来源: 解析 C。铁生锈是化学变化,在这个过程中会形成新物质。A ...
Consider the molecule Fe2O3, commonly known as rust. What is the molar mass of this compound? What is the chemical name of the compound: Si_3N_4^-? What is the correct name of Fe_2O_3? Give the name for the following: 1. K_2CO_3 \\2. Fe_2O_3 \\3. PbCrO_4 ...
When iron rusts, it is a(n) ___. A. chemical reaction B. physical change C. electrical reaction D. biological change 相关知识点: 试题来源: 解析 A。解析:铁生锈是化学反应,生成了新物质铁锈。选项 B 物理变化没有新物质生成,不符合。选项 C 电反应与题目无关。选项 D 生物变化不符合铁生锈...
We can see the phenomenon of rust on iron. The chemical substance that causes rust is ___. A. oxygen B. hydrogen C. nitrogen D. carbon dioxide 相关知识点: 试题来源: 解析 A。铁生锈是因为铁与空气中的氧气和水发生反应。选项 A 是氧气,选项 B 是氢,选项 C 是氮气,选项 D 是二氧化碳...
In a chemical reaction, iron reacts with oxygen to form rust. What is the English name for iron? A. Copper B. Aluminum C. Iron D. Silver 相关知识点: 试题来源: 解析 C。本题考查铁的英文名称。选项 A 是铜,选项 B 是铝,选项 D 是银。只有选项 C 是铁。
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View Solution Formula of Rust is : View Solution Chemical formula of Freon 12 is View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep, NEET preparation and ...