Chemistry

Activity 3.5 Laboratory reach Page 25 Aim: To distich the empirical formula of magnesium oxide Apparatus: Crucible with hat, tongs, bunsen burner, tripod stand, pipe-clay triangle. Materials: 10 cm magnesium ribbon, sandpaper. Procedure: 1. account a crucible and its palpebra. 2. scavenge the magnesium ribbon with sandpaper. 3. curl the ribbon and place it in the crucible. weigh the crucible with its lid and the glut in it. 4. band up the apparatus as shown in Figure 3.3. [pic] 5. First, groove the crucible without its lid, with a ponderous flame. 6. When the magnesium ribbon starts to burn, projection screen the crucible with its lid. 7. Using a pair of tongs, carefully put in the lid a little, at intervals. 8. When the burning is complete, remove the lid and heat the crucible strongly for 1 or 2 minutes. 9. allot the crucible to cool to populate temperature with its lid still on. 10. Weigh the crucible with its lid and the nitty-gritty again. 11. Repeat the process of heating, engine cooling system and weighing until a unbroken messiness is obtained. Record the unbroken mass obtained. reflexion: | reflexion |Inference | | | | |1 . released. |...is formed.

| | | | |2 . | | Data: |Description | mass (g)...If you want to get a full essay, order it on our website: Orderessay

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