Section 7 4 reaction rates 2025

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The document focuses on Chapter 7 of a physical science workbook, specifically Section 7.4, which discusses the factors affecting chemical reaction rates. It includes reading strategies, vocabulary building, and questions related to how temperature, surface area, concentration, and pressure influence reaction rates. Additionally, it covers the role of catalysts in speeding up reactions and their characteristics.

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What are the factors affecting the rate of reaction form 4?

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

How do I calculate reaction rate?

The rate of reaction is equal to the, R = rate of formation of any component of the reaction / change in time. Here in this reaction O2 is being formed, so rate of reaction would be the rate by which O2 is formed.

What is the number of particles of a substance per unit of volume?

concentration refers to the number of particles of a substance per unit volume, in facile words, the amount of particles in a substance.

How do you calculate the number of particles?

Formula: number of particles = number of moles x 6 x 10 Since 1 mole of substance contains 6 x 1023 particles, 2 moles of substance contains 2 x 6 x 1023 particles. 0.5 moles of substance contains 0.5 x 6 x 1023 particles.

What is the number of particles present in a given volume of solution?

Concentration in chemistry is the measurement of the number of particles present in a given volume, often in a mixture or solution. The concentration of a solution represents the amount of solute particles that are dissolved in the solvent.