reactantsonleftsideofreactionproductsonrightsideofequation反應物 2.Thesubstancesformed,calledproducts 產物 3.Therelativeamountsofthesubstancesinvolved relativeamountsofeachusingstoichiometriccoefficients係數representthenumberofmolecule 3 CoefficientsindicatetheamountofeachCompoundorelementpresentandCANbechangedto...
What is the chemical equation for the reaction? A. H₂ + CuO = Cu + H₂O₂ B. H₂ + CuO = Cu + O₂ C. H₂ + CuO = Cu + H₂O D. H₂ + Cu₂O = Cu + H₂O 相关知识点: 试题来源: 解析 C。中文解析:氢气还原氧化铜的化学方程式为 H₂ + CuO = Cu +...
4. Count your atoms to be sure the equation is balanced. -occasionally the coefficients can be reduced to a smaller whole number Sample problem: The reaction of zinc with aqueous hydrochloric acid produces a solution of zinc chloride and hydrogen gas. Write a balance chemical equation for the ...
The equation for the reaction gives the mole relationship between amount of C8H18 and CO2, but we need to know the mass relationship, so the conceptual plan will be * Tro: Chemistry: A Molecular Approach, 2/e Example: Estimate the mass of CO2 produced in 2007 by the combustion of 3.5...
Practise Questions on Chemical Reaction and Equation MCQ Q1:When Ag is exposed to air, it gets a black coating of (a) AgNO3 (b) Ag2O (c) Ag2S (d) Ag2CO3 Q2:In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide...
The chemical equation: 2H₂ + O₂ → 2H₂O represents which type of chemical reaction? A. Decomposition reaction B. Single displacement reaction C. Combination reaction D. Double displacement reaction 相关知识点: 试题来源: 解析 C。解析:化合反应是由两种或两种以上物质生成一种新物质的反应。
This is because a chemical reaction takes place causing a change in the milk and the nail. In fact, regular body processes such as respiration and digestion are also chemical reactions. A chemical reaction is expressed using a chemical equation. Let’s dive in and learn about chemical ...
A balanced chemical equation has an equal number of atoms of different elements in the reactants and products. For example, zinc reacts with dilute sulphuric acid to give zinc sulphate and hydrogen. This reaction can be written as \(\mathrm{Zn}+\mathrm{H}_{2} \mathrm{SO}_{4} \longri...
The chemical equation for the reaction between sodium and chlorine is___. A. Na+Cl₂=NaCl₂ B. 2Na+Cl₂=2NaCl C. Na+2Cl₂=NaCl₂ D. 2Na+2Cl₂=2NaCl₂ 相关知识点: 试题来源: 解析 B。钠和氯气反应生成氯化钠,化学方程式为 2Na+Cl₂=2NaCl。A 选项产物氯化钠的化学式错误...
Sample Chemical Reaction Equation In most chemical reactions, two or more substances, called reactants, interact to create different substances called products. CHEMICAL REACTION REACTANTS go IN PRODUCTS come OUT NO NEW ATOMS are created OR destroyed. (Law of Conservation of Mass) REACTANTS go ...