Start your trial now! First week only $4.99!ExpandTranscribed Image TextQuestion 3 Study the densities of the metalslin the table below. Based on your experimental data, which metal waslikely used to make the pre-1982 pennies? Describe what led you to this conclusion. Metal Density (g/mL) aluminum2.70 titanium 4.50 zinc 7.14 7.87 Iron 8.92 copper 10.49 silver 11.34 lead 19.3 gold A A EEEEEE Font Sizes B IUx' x,ChpExpert Answer

The metal which is used for making pennies before 1982 is given below with explanation.

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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QUESTION 11 Which term can be used to describe the process in the reaction below? 2 NaHCO3 (s) NazCO3 (s) + H2O (g) + CO2 (g) Dissociation Precipitation O Hydration O Decomposition QUESTION 12 Which of the following would NOT be considered valid sources of error in a laboratory experiment? I: Calculation errors II: Inability to calibrate measuring devices Click Save and Submit to save and submit. Click Save All Ansuuers to save all answers.
Jeff followed to procedure for Experiment 4, and collected the following data, which he recorded on his "Data and Calculations" sheet: Row A Mass of flask = 97.85 g Row B Mass of flask + unknown = 99.86 g Row C Mass of graduated cylinder + HCl( aq) = 37.470 g Row D Mass of emptied graduated cylinder = 26.941 g Row E Mass of flask containing reaction mixture = 109.55 g What was the mass in grams of the HCl( aq) used by Jeff in this experiment ?

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