5. How many sig-figs are in the following numbers? What is the uncertainty (keep units)? a....
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5. How many sig-figs are in the following numbers? What is the uncertainty (keep units)? a. 50.0 m b. 50 m c. 50.1 m d. 20224050 s c. 2.2090 kg f. 5.1 X 1013 J g. 0.000720 M h. Avogadro's Number 6. Complete the following math operations, and write the answer with the proper sig-figs, uncertainties, and units (Show work!). a. 1.3 m + 1.06 m + 1.42 m +0.76 m + 2 m b. (22.1 moles + 15.15 moles) / 5.0 L +12.27 moles/L c. 14.235 s +43.5 X 10-32 J/Planck's Constant 4. The following data was obtained by students in a class measuring the diameter of a beaker. The students used a ruler which contains tick marks for both centimeters and millimeters. Remember to use proper sig figs for final answers! Student # Beaker Diameter 1 5.61 cm 2 5.60 cm B 5.58 cm 5.63 cm 5 5.60 cm 6 5.59 cm 7 5.48 cm 8 5.62 cm a. What is the uncertainty of the ruler used? Don't forget units! b. What is the average and standard deviation of the beaker diameter? (Show Work) Assume the actual diameter of the beaker is known to be 5.6 cm. Is the data obtained accurate? Why or why not? Is the data obtained precise? Why or why not? 5. How many sig-figs are in the following numbers? What is the uncertainty (keep units)? a. 50.0 m b. 50 m c. 50.1 m d. 20224050 s c. 2.2090 kg f. 5.1 X 1013 J g. 0.000720 M h. Avogadro's Number 6. Complete the following math operations, and write the answer with the proper sig-figs, uncertainties, and units (Show work!). a. 1.3 m + 1.06 m + 1.42 m +0.76 m + 2 m b. (22.1 moles + 15.15 moles) / 5.0 L +12.27 moles/L c. 14.235 s +43.5 X 10-32 J/Planck's Constant 4. The following data was obtained by students in a class measuring the diameter of a beaker. The students used a ruler which contains tick marks for both centimeters and millimeters. Remember to use proper sig figs for final answers! Student # Beaker Diameter 1 5.61 cm 2 5.60 cm B 5.58 cm 5.63 cm 5 5.60 cm 6 5.59 cm 7 5.48 cm 8 5.62 cm a. What is the uncertainty of the ruler used? Don't forget units! b. What is the average and standard deviation of the beaker diameter? (Show Work) Assume the actual diameter of the beaker is known to be 5.6 cm. Is the data obtained accurate? Why or why not? Is the data obtained precise? Why or why not?
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