Concept explainers
Gold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 × 10−5 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.
Interpretation:
A sheet of gold leaf is
Explanation of Solution
Given, thickness of gold leaf is
From mass and density, the volume of the gold leaf is calculated.
The conversion factor from the density of gold can be derived as
The area can be calculated as
The units of the area are converted into square feet by the conversion factor.
Want to see more full solutions like this?
Chapter 1 Solutions
Chemistry: Principles and Practice
- 1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information would you need to look up and how would you determine the percentage of ethanol in this solution?arrow_forwardto make a tablet of aspirin, it requires 249 mg of salicylic acid. if the chemist purchased 9.0 x 10^-3 OZ of salicylic acid, are these enough to make one table of aspirin?arrow_forwardAbout two centuries ago, Benjamin Franklin showed that 1teaspoon of oil would cover about 0.5 acre of still water. If you know that 1.0 x 104 m2= 2.47 acres and that there is approximately 5 cm3 in a teaspoon, what is the thickness of the 0.5-acre layer of oil? How might this thickness be related to the sizes of molecules?arrow_forward
- A sample of tap water contains 1.95 x 103 ppm CaCO3(aq). Assuming the density of tap water is 1.00g/mL, calculate the mass of CaCO3 in 2.00 L of water.arrow_forwardthe density of gallium triiodide, Gal, is 4.15g/cm^3. If the initial volume of water in a graduated cylinder is 45.6mL, what will the volume be after adding a crystal of gallium triiodide which has a mass of 24.659g. The crystal is not water soluble.arrow_forwardA chardonnay wine is 13.5 percent by mass alcohol. If we consume 24 fluid oz of wine, and the density of the wine is 0.982 mg/mL, how much alcohol was consumed? 09.6 x 103 g alcohol O 301 g alcohol O 94 g alcohol O 106 g alcohol O 13.3 g alcoholarrow_forward
- Given the density of Au is 19.3 g/cm3, determine the mass of gold (in grams) in an ingot with the dimensions of 10.0 in × 4.00 in × 3.00 in.arrow_forwardIn the opening scene of the movie Raiders of the Lost Ark, Indiana Jones tries to remove a gold idol from a booby-trapped pedestal. He replaces a gold (D = 19.32 g/cm²³) idol of dimensions 5.0 inches by 5.0 inches by 5.0 inches with a bag of sand of approximately double the volume with sand (D = 3.65 g/cm³). Is the bag of sand really equal to the gold idol or will Dr. Jones set off the trap? Explain your answer and include a mathematical explanation. ML Cm3arrow_forwardA student is trying to identify the composition of a pure metal block by determining its density. The student records the mass of the sample to be 30.0 g. The rectangular block is 2.00 cm × 3.00 cm × 1.40 cm.arrow_forward
- To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900 ppm fluoride, F−. How many grams of F− must be added to a cylindrical water reservoir having a diameter of 4.12×10^2 m and a depth of 76.72 m?arrow_forwardIt has been estimated that 8.0 × 104 tons of gold (Au)have been mined. Assume gold costs $1350 per troyounce. What is the total worth of this quantity of gold?(1 troy ounce = 31.103 g)arrow_forwardGiven the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot with the dimensions of 10.0 in x 4.00 in x 3.00 in.arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning