Macmillan Learning Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.50 g and has a volume of 0.535 cm. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm'. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper. Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats
Macmillan Learning Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.50 g and has a volume of 0.535 cm. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm'. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper. Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats
ChapterU1: Alchemy: Matter, Atomic Structure, And Bonding
Section: Chapter Questions
Problem 2STP
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Transcribed Image Text:Macmillan Learning
Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 8.50 g and has a volume of
0.535 cm. Gold has a density of 19.3 g/cm² and copper has a density of 8.96 g/cm'. Calculate the percentage by mass of each
metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains.
gold:
copper.
Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For
example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats.
purity:
carats
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