This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.

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filtered to remove them
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32. Discuss the process of separating mixtures through crystallization.
Step 1: Define crystallization. Crystallization is a separation technique used to purify solid substances from a solution. It relies on the principle that the solubility of a solid in a solvent changes with temperature.
Step 2: Dissolving and filtration. The impure solid is first dissolved in a minimum amount of a suitable hot solvent to form a saturated solution. If insoluble impurities are present, the hot solution is filtered to remove them.
Step 3: Cooling and crystal formation. The hot, saturated solution is then allowed to cool slowly. As the temperature decreases, the solubility of the desired solid decreases, causing it to precipitate out of the solution in the form of pure crystals.
Step 4: Separation and drying. The pure crystals are then separated from the remaining liquid (mother liquor) by filtration. The crystals are washed with a small amount of cold solvent to remove any adhering impurities and then dried.
33. State four forms of energy.
Here are four forms of energy: • Kinetic energy • Potential energy • Thermal energy • Chemical energy
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This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.