What is the chemical formula for carbon dioxide?A) CO2B) H2OC) NaClD) NH3 相关知识点: 试题来源: 解析 A 选项分析如下: A) CO₂——二氧化碳由一个碳原子和两个氧原子组成,符合化学命名规则,正确。 B) H₂O——水的化学式,与问题无关。 C) NaCl——氯化钠的化学式,对应盐的分子结构,错误...
Some chemical reactions reach an equilibrium rather than going to completion. What is "equal" in such an equilibrium? Use equations to illustrate "equal" at the molecular level in an equilibrium reaction. For the chemical reaction: N2 + 3H2 = 2NH3, K = 2.3 * 10^-6 If you begin with ...
Anhydrous ammonia, represented chemically as NH3, is a colorless gas with an acrid odor. Although it has many applications in industry and commerce, its necessity for agriculture cannot be underestimated. For farming, anhydrous ammonia is mostly used as a nitrogen fertilizer which provides plants wit...
What is the enthalpy change for the reaction SO3 gives SO2 + 1/2 O2, given that the reaction 2SO2 + O2 gives 2SO3 has an enthalpy change of -98.8 kJ/mol? What does the enthalpy change of a chemical system represent? What is the change in enth...
Formula:Nh3; EINECS:231-635-3; Constituent:Industrial Pure Air; Grade Standard:Industrial Grade; Chemical Property:Poisonous Gases; HS:2814100000; CAS No.:1333-74-0; Formula:H2; EINECS:215-205-7; Constituent:Industrial Pure Air; Grade Standard:Industrial Grade; ...
Hexagonal boron nitride powder has a chemical structure similar to graphite and is applied in a wide range of fields as a very chemically stable material. White powder, excellent in thermal conductivity, insulation, heat resistance, corrosion resistance, lubricity, as a filler or additive, and its...
1,8-Diazabicyclo[5.4.0]undec-7-ene is a bicyclic amidine base. It is non-nucleophilic, sterically hindered, tertiary amine base in organic chemistry.
This closed-loop system is highly efficient, using significantly less water than traditional farming methods and eliminating the need for chemical fertilizers. Historical Background of Aquaponics Aquaponics is not a modern invention; its roots can be traced back to ancient civilizations. One of the ...
urea is pure and prevents introducing contaminants into your engine’s exhaust system. When infused into the exhaust steam, urea undergoes a chemical reaction. It decomposes to produce ammonia (NH3), which interacts with nitrogen oxide in the SCR catalyst to form nitrogen (N2) and water (H20)...
CAS No.:7664-41-7 Other Names:R717 NH3 Ammonia gas cylinder MF:NH3 EINECS No.:231-635-3 Grade Standard:Food Grade, Industrial Grade Purity:99.9%-99.9995% Appearance:Colorless Liquid Application:Chemical, Industrial, Food, Refrigerant Dot Class:2.3 UN No.:UN1005 Valve ... ...