Remove the plunger (from the 60-mL syringe) and lubricate the sides o.docx

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Remove the plunger (from the 60-mL syringe) and lubricate the sides of its rubber part with a drop or two of silicon oil; reinsert it and move back and forth a couple of times. Remove it again for the next step. 2. Grind an eggshell using a mortar and pestle. Weigh 0.20 g of the ground bits of shell in a plastic cap that fits in the barrel of the 60-mL syringe. Fill the syringe with water (use one of your fingers to prevent the water from leaking out), and place the plastic cap on top of the water (as to make it float on it). Remove your finger so that the water comes out and the plastic cap gently moves down to the bottom of the syringe. Then, reinsert the plunger. Draw in 10.0 mL of 3 M HCI into the syringe so as to make the plastic cap float on the HCI solution. Read the initial volume reading of the rubber tip of the plunger. Cap the
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