Give the precision of each of the followings: 50 mL buret 100 mL graduated cylinder 10 mL Mohr pipet 25 mL graduated cylinder 0-100oC thermometer
1. Give the precision of each of the followings:
-
- 50 mL buret
- 100 mL graduated cylinder
- 10 mL Mohr pipet
- 25 mL graduated cylinder
- 0-100oC thermometer
2. Calculate the percent error for the last trial for each piece of equipment (50.0mL).
3. A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What should the student report as the mass of one bead? Explain your answer.
4. A student reported the density of ten glass beads as 2.05 ± 0.34 g/mL. What should the student report as the density of one glass beads? Explain your answer.
5. A student noticed that the average diameter of the glass beads used for the mass measurements was significantly smaller than those used for the volume measurements. How would experimental determination of the density of glass be affected? Is this a systematic or random error?
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