1. A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What sho 4
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1. A student reported the mass of ten glass beads as 2.507 ± 0.015 g. What sho 4. A student noticed that the average diameter of as the mass of one bead? Explain your answer. uid the student report the glass beads used for the mass measurements was significantly smaller than those used for the vol- ume measurements. How would experimental deter- mination of the density of glass be affected? Is this a systematic or a random error? 2. A student reported the density of ten glass beads as 2.05 ± 0.34 g mL-1. What should the student report as the density of one glass bead? Explain your answer. 5. Which of the following terms has the greater effect on random error, (d): the precision of the mass measurements, indicated by [plm)T : or the precision of the volume measurements, indicated by (v)/V12? How might you revise the experimental procedure to reduce this effect? 3. A student measured the mass of the same ten glass beads five times instead of using five sets of ten randomly selected glass beads. Would you ex- pect that the confidence interval for the mean of the mass measurement would be zero?Explanation / Answer
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