Question 3 Study the densities of the metals in the table below. Based on your experimental data, which metal was likely used to make the pre-1982 pennies? Describe what led you to this conclusion. Metal Density (g/mL) aluminum 2.70 titanium 4.50 zinc 7.14 7.87 iron 8.92 copper 10.49 silver 11.34 lead 19.3 gold A A E E E E E E Font Sizes B IUx x, O 9 26 hp

Question 3 Study the densities of the metals in the table below. Based on your experimental data, which metal was likely used to make the pre-1982 pennies? Describe what led you to this conclusion. Metal Density (g/mL) aluminum 2.70 titanium 4.50 zinc 7.14 7.87 iron 8.92 copper 10.49 silver 11.34 lead 19.3 gold A A E E E E E E Font Sizes B IUx x, O 9 26 hp

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter18: Oxidation–reduction Reactions And Electrochemistry

Section: Chapter Questions

Problem 63QAP: . Although aluminum is one of the most abundant metals on earth, its price until the 1890s made it a...

See similar textbooks

Similar questions

Determine the percentage of iron in a sample of limonite from the following data. Weight of sample — 0.5000-g  Volume of KMnO4 added — 50.0-mL (1.00-mL KMnO4 ≈ 0.005317-g Fe) Volume of FeSO4 — 6.00-mL (1.00-mL FeSO4 ≈ 0.00920-g FeO) Molar Masses: Fe = 55.85 FeO = 71.84
. Although aluminum is one of the most abundant metals on earth, its price until the 1890s made it a precious metal” like gold and platinum. Why?
Give typed explanation not a single word of hand written 5 gm aluminium
Which one occurs? State your observations. • A metallic deposit appears • Bubbles appear • A temperature change occurs • A color change occurs • A precipitate (cloudy, tiny particles) appears Hydrochloric acid + aqueous sodium hydroxide video 1: https://www.youtube.com/watch?v=1XyjlQF6bVs video 2: https://www.youtube.com/watch?v=Y6uwoFjSvIM&t=437s
Sterling silver (silver 925) is a substitutional solid solution alloy consisting of 92.5 wt% Ag and 7.5 wt% Cu. Compute the number of Cu atoms per cubic centimeter of silver 925. The density of the pure Ag and Cu are 10.49 g/cm3 and 8.96 g/cm3, respectively.
sources of error of determination of iron in iron ore
Balance the following reaction. The charge on Cu in CuS is 2+. You may add additional phases but not components to achieve this. Show your working out. CuS(s) + HNO3(aq) --> CuSO4(s) + NO(g)
In order to plate a steel part having a surface area of 0.13 m2 with a 0.05 mm thick layer of nickel: (a) How many atoms of nickel are required? (b) How many moles of nickel are required?
Calculate the percent purity of copper in an ore in terms of Cu2O from the given data: Weight of copper ore - 1.20-g Volume of Na2S2O3 used - 40.00-mL (1.00-mL Na2S2O3 ≈ 0.004175-g KBrO3) Molar Masses: KBrO3 = 167.0 Cu2O = 143.1 Note: Reaction between KBrO3 and Na2S2O3 happens based on the pattern of reaction in problem no.2. Bromate is used in place of iodate.
28. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3.
Consider an iron bar on a balance weights 75.0g. As the iron bar rusts, which of the following is true? Explain your answer. The balance will read less than 75.0 g. The balance will read 75.0 g. The balance will read greater than 75.0 g. The balance will read greater than 75.0 g, but if the bar is removed, the rust is scraped off, and the bar replaced, the balance will read 75.0 g.
Reasons why ore must be screened?