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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29. For items 29 - 32, please refer to the following chemical equation:CuC12 + 2 NaNO3 - Cu(NO3)2 - 2 NaCI. If 12 grams of copper (II) chloride react with 20 grams of sodium nitrate how much sodium chloride can be formed? A. 10 g NaCi B. 11 g NaCI C. 15 g NaCl D. 20 g Naci 30. For items 29 - 32, please refer to the following chemical equation:CuC12 + 2 NaNO3 - Cu(NO3)2 - 2 NaCI. What is the limiting reagent? * O A. Copper (Il) chloride B. Copper (II) nitrate C. Sodium chloride D. Sodium nitrate 31. For items 29 - 32, please refer to the following chemical equation:CuC12 + 2 NANO3 - Cu(NO3)2 - 2 Naci. What is the excess reagent? A. Copper (II) chloride B. Copper (II) nitrate C. Sodium chloride D. Sodium nitrate 32. For items 29 - 32, please refer to the following chemical equation:CuCi2 + 2 NANO3 - Cu(NO3)2 - 2 Nacl. How much of the excess reagent is left over in this reaction? O A. 3 g В. 5g C.79 D. 8 g
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Name Balancing Act 2 This activity will help you become skilled at balancing chemical equations. 1. Cut out the squares that the bottom of the paper. 2. Decide whether or not each equation is balanced. If it is not, decide how to balance it, pasting the small squares as needed into the spaces. 3. Some spaces will not require a number. 1. S8 + 0₂ → SO3 2. Na + H₂O → H₂ C10H16 + Si₂H3 + FeS₂ + Fe₂O₂ + H₂O₂ → SIO₂ + 3. 4. 5. 6. 7. 8. 9. K + 10. Cl₂ → 02 → Sa+ O₂ -> H₂ → H₂O + HF →> Br₂ → F₂ -> NaOH + C + SIO₂ + Fe₂O3 + Fe + 0₂ SiF4 KBr SF + HCI H₂O SO₂ H₂O 2 of 2 H₂O

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