The electrodes in a silver oxide battery are silver oxide 1Ag2O2 and zinc (b) Which battery do you think has an energy density most similar to the silver oxide battery: a Li-ion battery, a nickel– cadmium battery, or a lead–acid battery? [Section 20.7]

Verified step by step guidance

Step 1: Understand the concept of energy density, which is the amount of energy stored in a given system or region of space per unit volume or mass.

Step 2: Identify the energy density of the silver oxide battery. This information might be provided in your textbook or lecture notes.

Step 3: Analyze the graph provided, which compares the energy densities of various batteries: Li-ion, NiMH, Nicad, and Lead acid.

Step 4: Compare the energy density of the silver oxide battery with the energy densities of the batteries shown in the graph.

Step 5: Determine which battery (Li-ion, NiMH, Nicad, or Lead acid) has an energy density most similar to that of the silver oxide battery based on the graph.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Energy Density

Energy density refers to the amount of energy stored in a given system or region of space per unit volume or mass. In batteries, it is a critical measure that indicates how much energy can be delivered relative to the battery's weight or size. Higher energy density means a battery can store more energy, making it more efficient for applications requiring compact power sources.

Battery Chemistry

Different types of batteries utilize various chemical reactions to store and release energy. For instance, silver oxide batteries use silver oxide and zinc, while lithium-ion batteries rely on lithium compounds. Understanding the chemistry behind each battery type helps in comparing their performance, including energy density, cycle life, and efficiency.

Comparative Analysis of Batteries

Comparative analysis involves evaluating different battery types based on specific criteria such as energy density, cost, lifespan, and environmental impact. The graph provided illustrates the energy densities of various batteries, allowing for a visual comparison. This analysis is essential for determining which battery type is most suitable for specific applications, such as in consumer electronics or electric vehicles.

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Magnesium, the element, is produced commercially by electrolysis from a molten salt (the 'electrolyte') using a cell similar to the one shown here. (a) What is the most common oxidation number for Mg when it is part of a salt?

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Textbook Question

Magnesium, the element, is produced commercially by electrolysis from a molten salt (the 'electrolyte') using a cell similar to the one shown here. (b) Chlorine gas is evolved as voltage is applied in the cell. Knowing this, identify the electrolyte.