Textbook Question
Write the molecular formula for a substance that contains two oxygen molecules, two carbons, and four hydrogen atoms. Be sure to follow the standard conventions of writing molecular formulas.
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Ch. 2 - Biochemistry Basics
Chapter 2, Problem 2.9a
In each of the following reactions, identify the products and reactants, and state what class of reaction is shown. <IMAGE>
Verified step by step guidance1
insert step 1: Begin by examining the given chemical reaction image. Identify the molecules or compounds on the left side of the reaction arrow; these are the reactants.
insert step 2: Next, identify the molecules or compounds on the right side of the reaction arrow; these are the products.
insert step 3: Compare the reactants and products to determine what changes have occurred during the reaction. Look for changes in chemical bonds, the formation of new compounds, or the release/absorption of energy.
insert step 4: Based on the changes observed, classify the type of reaction. Common classes include synthesis, decomposition, single replacement, double replacement, and combustion.
insert step 5: Summarize your findings by listing the reactants, products, and the class of reaction.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Reactants and Products
In a chemical reaction, reactants are the starting substances that undergo a transformation, while products are the substances formed as a result of the reaction. Understanding the distinction between these two is crucial for analyzing any chemical equation, as it helps in identifying what changes occur during the reaction.
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Types of Chemical Reactions
Chemical reactions can be classified into several categories, including synthesis, decomposition, single replacement, double replacement, and combustion. Each type has distinct characteristics and mechanisms, which influence how reactants interact and what products are formed. Recognizing the class of reaction aids in predicting the outcome and understanding the underlying processes.
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Balancing Chemical Equations
Balancing chemical equations is essential to ensure that the law of conservation of mass is upheld, meaning the number of atoms of each element must be the same on both sides of the equation. This process involves adjusting coefficients in front of reactants and products, which is critical for accurately representing the stoichiometry of the reaction and understanding the quantitative relationships between substances.
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Related Practice
Textbook Question
Indicate the true statements and then correct the false statements so that they are true.
a. Isotopes are atoms with differing numbers of protons and the same number of
neutrons.
b. A cation is a positive ion.
c. Redox reactions create ions.
d. Equal sharing of electrons leads to polar covalent bonds.
e. Ions are charged atoms.
f. CO2 is an inorganic molecule.
g. Isomers have the same molecular formula but different structures.
h. Adding a base to a solution will decrease the pH.
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Textbook Question
Fill in the blanks:Acids donate _______________________ to an aqueous solution, which will lead to a(n) _______________________ in pH. In contrast, bases donate _______________________ to an aqueous solution and will _______________________ the pH. The pH of a solution with more OH−
than H+ will have a(n) _______________________ pH.
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