A. products to reactants. B. reactants to products. C. catalysts to reactants. D. products to catalysts. 相关知识点: 试题来源: 解析 B。解析:在化学反应方程式中,箭头是从反应物指向产物。选项 A 方向错误。选项 C 和 D 催化剂不是反应的主要物质,箭头不指向它们。反馈 收藏 ...
Answer to: Identify the type of reaction: a. A + B arrow AB b. A + BC arrow AC + B By signing up, you'll get thousands of step-by-step solutions to...
Each reaction has a stepwise reaction mechanism that explains how it happens in sequence - although the detailed description of steps is not always clear from a list of reactants alone. The stepwise course of any given reaction mechanism can be represented using arrow pushing techniques in which...
Classify the following reaction: 3KOH(aq) + H3PO4(aq) arrow K3PO4(aq) + 3H2O(l) Classify the following reaction: Al(OH)3(aq) + 3HCl(aq) arrow AlBr3(aq) + 3H2O(l) Classify the following reaction: Na2S(aq) + 2HCl(aq) arrow 2NaCl(aq) + H2...
consider the formula for the chemical reaction that forms carbon dioxide, C + 2O → CO2. The number 2 preceding the oxygen symbol O shows that there are two oxygen atoms in the reaction. The lack of a number preceding the carbon symbol C and the compound formula CO2shows that there is ...
The forward reaction arrow, the reverse reaction arrow, the equilibrium arrow, and the double-headed arrow. States of matter The States of matter icon allows students to enter the appropriate physical state of a compound or ion into the answer blank. It will only appear on the CEM if the ...
What is a Chemical Reaction? Chemical Reaction – change in composition Reactants → Products (yields) Set of atoms in a → Set of atoms in a particular arrangement different arrangement Section 1 – What is a Chemical Reaction? Evidence of a Chemical Reaction Heat Change. Color change. Light...
2.ChemistryAny of various substances, such as litmus or phenolphthalein, that indicate the presence, absence, or concentration of another substance or the degree of reaction between two or more substances by means of a characteristic change, especially in color. ...
reaction outside the cavity. In free-space (black dotted), the reactive trajectories will start to break the Si-C bond at around 500 fs (indicated by the black arrow). The red dashed-dotted vertical line emphasizes the resonance predicted by Grote-Hynes theory (see text for more details)....
3. Distinguish the limiting reactant and using it to calculate the amount of product;4. Calculating the mass percentage of one element in a compound;5. Knowing the definition of molar gas volume and do related calculations;6. Knowing the simple reason for incomplete reaction, and calculating ...