结果1 题目 9 Which of the following reactions involves an exothermic reaction?(1)Photosynthesis(2)Respiration(3)0Combustion(4)Thermal decomposition(5)Electrolysis B A(1)and(4)B(2)and(3)C(1),(4)and(5)D(2),(3)and(4) 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
Chemical reactions can be exothermic or endothermic. Which of the following reactions is exothermic? A. Melting ice B. Burning coal C. Evaporating water D. Dissolving salt in water 相关知识点: 试题来源: 解析 B。燃烧煤炭是放热反应。冰融化、水蒸发和盐溶解于水都是吸热反应。本题考查对放热反应...
27). Which of these is an exothermic process? a. the boiling of water b. the breaking of a boiling of water bond c. the condensation of water d. the ionization of a melting snow atom 28). Heat is Identify which of the following ar...
Fixed bed reactor (10) for exothermic catalytic reactions comprising a longitudinal outer chamber (12) having a proximate and a distal end (14, 16), provided with a reactor inlet (24) near the first longitudinal end (14). The reactor further comprises a longitudinal inner chamber (18) ...
are different solvents that are used in organic chemistry to carry out the different reactions. ...
Thermochemical Reactions: An exothermic reaction is a chemical reaction that produces energy, usually in the form of heat. An endothermic requires an input of energy to proceed. Answer and Explanation: Learn more about this topi...
The complex reaction of CH2O with NO2 provides a source of exothermicity that is relatively low compared to subsequent reactions but important to the overall decomposition of both HMX and PETN [32]. We use a simplified mechanism based on a series of experimental and modeling studies undertaken ...
aHeat recovery from thermal decomposition, exothermic conversion and absorption reactions is typically in the form of high pressure, superheated steam, which is optimized based on site needs and economics. 从热分解、放热转换和吸收反应的热补救典型地是以高压,过热蒸汽的形式,被优选根据站点需要和经济。[...
Of these compounds, the bis-quaternary compounds are preferred, and of these, in turn, those in which n' denotes zero, Z' denotes phenylene which is optionally substituted by methyl and Y'1denotes methylene or ethylene, are preferred.
of the molecule, with the provision that, when R1 is an alkylene group, R3 and R4 are polyatomic groups, and when G1 is a substituent defined for Nu, an adjacent R3 or R4 can be the group: ##EQU6## X1 is a ballasting group of sufficient size to render said compound immobile in ...