Iron & Oxygen Lab PDF

262 g 109305 g 957 g we then measured a separate

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(110.262 g – 109.305 g = .957 g). We then measured a separate beaker (69.718 g) and then the beaker with Sample 2 (70.642 g). We then used our measurements to calculate the mass of Sample 2 (70.642 g – 69.718 g = .924 g). We used tweezers to place Sample 1 in the vinegar and salt solution for exactly 60 seconds. We promptly removed Sample 1 after 60 seconds and shook the sample vigorously before placing the steel wool into the top of a 30 mL syringe. We pushed the plunger down to 28.6 mL and then placed the syringe into the 50 mL beaker of detergent water. While the syringe was inside the beaker we drew up the water to the zero mark of the syringe and started the timer immediately. We then Raye & Ibrahim 1
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placed Sample 2 in the vinegar and salt solution for 60 seconds, shook vigorously, and placed the sample into the syringe. We placed the plunger down to the 28 mL mark and placed the balloon on the end of the syringe. While holding the balloon on the rubber tip we pulled up the plunger until air started flowing from the balloon through the syringe. We placed the plunger back down to the 28 mL mark when the balloon was almost deflated and placed the syringe into the second beaker of detergent and water. We drew up the water to the zero mark and started a separate timer immediately. We recorded the volume of the water every 3 minutes and saw the water rise up inside both of the syringes. It looked as if the Air sample rose quicker by the 9 minute mark than breath (5.1 mL to 3.0 mL). Once we were at the 24 minute mark the breath sample leveled off at 4.0mL. In contrast the air sample did not level off until the 27 minute mark (6.4 mL) From level of water to the amount of
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262 g 109305 g 957 g We then measured a separate beaker...

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