For the hand, immediately rinse the affected area with copious amounts of cold running water for at least 15-20 minutes.

1. Your neighbour spills sulphuric acid on her hand and desk, what is your response? Step 1: For the hand, immediately rinse the affected area with copious amounts of cold running water for at least 15-20 minutes. Step 2: For the desk, neutralize the spill with a weak base like sodium bicarbonate solution, then clean it up with absorbent material. Report the incident to the instructor. 2. At the end of experiment, you have a flask full of isopropyl alcohol. How do you dispose of it? Dispose of isopropyl alcohol in a designated organic waste container. Do not pour it down the sink, as it is a flammable solvent. 3. What procedure would you use do dilute sulphuric acid using water? Always add the acid slowly to the water, while stirring constantly. This method helps to dissipate the heat generated during dilution and prevents splashing. 4. Why do you not eat and drink in the laboratory? Eating and drinking in the laboratory is prohibited to prevent the ingestion of hazardous chemicals that may contaminate food or beverages, leading to illness or poisoning. 5. You are heating water in a test-tube over flame. Why do you point the opening away from you and others? Pointing the opening away prevents hot liquid or steam from being ejected towards anyone if the liquid suddenly boils or "bumps," which could cause severe burns. 6. If you're using the 40X objective and you know your ocular is 10X, what is the total magnification? Step 1: The total magnification is calculated by multiplying the objective lens magnification by the ocular lens magnification. Total Magnification = Objective Magnification × Ocular Magnification Step 2: Substitute the given values. Total Magnification = 40X × 10X Total Magnification = 400X The total magnification is 400X. 7. If you bump your microscope and lose focus, what do you do use to refocus your specimen? Use the fine adjustment knob to bring the specimen back into sharp focus. If the focus is significantly lost, you may need to use the coarse adjustment knob carefully, then the fine adjustment. Got more? Send 'em 📸