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.
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Chapter 1 Solutions
Chemistry: Principles and Practice
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