Question: 8. Put the quantities below into scientific notation and then convert to the metric units indicat…


8. Put the quantities below into scientific notation and then convert to the metric units indicated in the second column. Scientific Notation Convert 16 ml 0.0005 150 12 nm ml 9. Given a 50-ml volumetric flask, 50-ml graduated cylinder, 10-ml pipette, 100-ml beaker and 75-ml Erlenmeyer flask, which measuring instrument would you choose to measure 25 ml of water 10. Why is a volumetric Aask more accurate than a graduated cylinder for measuring volume? 11. What is meant by precision and accuracy in making mcasurements a. What determines how precise a measurement ie b. What determines how accurate a measurement is? 12. You measure 5 ml of a solution and determine its mass on a balance. You repeat this pro- cedure four times. You try the experiment again. This time you have four new values for mass, as shown below. Choose the statement that best describes your measurements. Experiment 15.7 g.5.8 g.5.7 g 5.8 g Experiment 24.9 g.5.0 g. 4.8 g 5.3g a. The measurements in both experiments are accurate and precise. b. The measurements in both experiments are not accurate but are precise. c. The measurements in experiment I are not accurate but are precise; the measurements in experiment 2 are accurate but not prcise d. The measurements in experiment I are accurate and not precise; the measurements in experiment 2 are not accurate and not precise. 47

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8. Put the quantities below into scientific notation and then convert to the metric units indicated in the second column. Scientific Notation Convert 16 ml 0.0005 150 12 nm ml 9. Given a 50-ml volumetric flask, 50-ml graduated cylinder, 10-ml pipette, 100-ml beaker and 75-ml Erlenmeyer flask, which measuring instrument would you choose to measure 25 ml of water 10. Why is a volumetric Aask more accurate than a graduated cylinder for measuring volume? 11. What is meant by precision and accuracy in making mcasurements a. What determines how precise a measurement ie b. What determines how accurate a measurement is? 12. You measure 5 ml of a solution and determine its mass on a balance. You repeat this pro- cedure four times. You try the experiment again. This time you have four new values for mass, as shown below. Choose the statement that best describes your measurements. Experiment 15.7 g.5.8 g.5.7 g 5.8 g Experiment 24.9 g.5.0 g. 4.8 g 5.3g a. The measurements in both experiments are accurate and precise. b. The measurements in both experiments are not accurate but are precise. c. The measurements in experiment I are not accurate but are precise; the measurements in experiment 2 are accurate but not prcise d. The measurements in experiment I are accurate and not precise; the measurements in experiment 2 are not accurate and not precise. 47

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