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Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of jewelry containing only gold and silver, which have pure densities of 19.3 g/cm³ and 10.5 g/cm³ respectively. You measure the piece of jewelry's volume to be 1.25 cm³ and its mass to be 20.5 g. Assuming the total volume of the jewelry is the sum of the volumes of the gold and silver it contains, what is the mass percent of gold in the piece?

Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of jewelry containing only gold and silver, which have pure densities of 19.3 g/cm³ and 10.5 g/cm³ respectively. You measure the piece of jewelry's volume to be 1.25 cm³ and its mass to be 20.5 g. Assuming the total volume of the jewelry is the sum of the volumes of the gold and silver it contains, what is the mass percent of gold in the piece?

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter1: Essential Ideas
Section: Chapter Questions
Problem 9E: What properties distinguish solids from liquids? Liquids from gases? Solids from gases?
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Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of jewelry containing only gold and silver, which have pure densities of 19.3 g/cm³ and 10.5 g/cm³ respectively. You measure the piece of jewelry's volume to be 1.25 cm³ and its mass to be 20.5 g. Assuming the total volume of the jewelry is the sum of the volumes of the gold and silver it contains, what is the mass percent of gold in the piece?
Transcribed Image Text:Gold is alloyed with other metals to increase its hardness in making jewelry. You have a piece of jewelry containing only gold and silver, which have pure densities of 19.3 g/cm³ and 10.5 g/cm³ respectively. You measure the piece of jewelry's volume to be 1.25 cm³ and its mass to be 20.5 g. Assuming the total volume of the jewelry is the sum of the volumes of the gold and silver it contains, what is the mass percent of gold in the piece?
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