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7. Which of the 4 observation of a chemical reaction did not observe either of the above two chemical reactions? 8. The purpose of this lab was to experimental justify the existence of the Law of Conservation of Mass. If you were to change the scale (number of sig figs that scale reads) of the balance, would you use a scale that had more or less decimal places. Explain. 9. Theoretically, the only time you removed any of the equipment from the balance pan was to add the solutions to the flask. Why did you do this instead of taking all the equipment off of the balance, add the chemicals together and then put all the equipment back on the balance pan to weigh it after the reaction? Explain. |