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Chem Lab1

# Chem Lab1 - Lab Report Laboratory Techniques Measurements...

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Lab Report Laboratory Techniques & Measurements Observations from Procedures : 1. Length measurements: a. a. Travel Razor (Bic) – 11.3 cm b. Small Ear Ring – 0.1 cm / c. Pencil – 8.2 cm b. a. Travel Razor (Bic) -111.3 mm b. Small Earring – 10 mm c. Pencil- 82.5 mm 2. Warm Temperature Measurements: d. a. 57.12°C b. (after about 2.5 mins) 59.4°C c. (after about 5 mins) 80.1°C (I expected it to be @ 100°C) 3. Cold Temperature Measurements: d. 15 °C e. 1.5°C 4. Volume Measurements: d. Volume of half filled graduated cylinder = 12.5 ml e. Volume of filled small test tube 10.3 ml f. Number of drops in 1 ml = 30 drops g. Volume of the micro pipet = 120 drops / ml 6. Density Measurements: a. The density of water should be = d=m/v; d = 5.29/5= 1.058ml

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b. The density of isopropyl alcohol should be = d=3.93/5= 0.786ml c. The density of the salt solution will be = d= 1.03ml d. Since you are determining the density of a metal bolt, the answer you get should make sense. Compare your results against the example densities. 7.9 g/ml Measuring the densities of the fluids was fairly simple. I was conscience of operator to prevent operator error in determining results. I was careful and checked my measurements twice; calculating the density of water as 1.058 g/mL, the alcohol as
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Chem Lab1 - Lab Report Laboratory Techniques Measurements...

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