Gold is alloyed (mixed) with other metals to increase its hardness in making jewellery. Consider a piece of gold jewellery that weighs 12.0 g and has a volume of 0.675 cm3. The jewellery contains only gold and silver, which have densities of 19.3 g/cm3 and 10.5 g/cm3, respectively. Assuming that the total volume of the jewellery is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in the jewellery.

Given: Total weight of jewellery = 12 g Volume of jewellery = 0.675 cm3 Density of gold = 19.3 g/cm3…

Answered: Gold is alloyed (mixed) with other…

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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Gold is alloyed (mixed) with other metals to increase its hardness in making jewellery. Consider a piece of gold jewellery that weighs 12.0 g and has a volume of 0.675 cm³. The jewellery contains only gold and silver, which have densities of 19.3 g/cm³ and 10.5 g/cm³, respectively. Assuming that the total volume of the jewellery is the sum of the volumes of the gold and silver that it contains, calculate the percentage of gold (by mass) in the jewellery.

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