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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Here are the answers to the questions: 11. Why should the emergency exit in a science laboratory be clearly marked? C) To provide a quick escape in case of emergency. Emergency exits are clearly marked to ensure that occupants can quickly and safely evacuate the building during an emergency, such as a fire or chemical spill. 12. Grade 8 learners were learning about evaporation and came across the term solvent. What is a solvent? A) A substance that dissolves another substance. A solvent is a substance, typically a liquid, that has the ability to dissolve other substances (solutes) to form a solution. 13. Grade 8 learners observed the diagram below while discussing methods of separating homogeneous mixtures. Which method is shown? The diagram illustrates a distillation apparatus, which is used to separate components of a liquid mixture based on differences in their boiling points. The method shown is Distillation. That's 2 down. 3 left today — send the next one.