Question

A gold smith claims that an ornament is made of pure gold of density 19.32 g/cm3. A chain made from this gold well ghs 25.25g. the appparent weight of the chain when immersed in water is 23.075g. ysing suitable cslculation, determine the purity of gold

Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

Given A gold smith claims that an ornament is made of pure gold of density 19.32 g/cm3. A chain made from this gold well g 25.25g. the apparent weight of the chain when immersed in water is 23.075g. using suitable calculation, determine the purity of gold

• So weight of ornament in air is 25.25 g
• Weight of ornament in water is 23.075 g
• So relative density of ornament will be weight of ornament in air / loss of weight in water
•                                                                 = 25.250 g / 25.25 – 23.075
•                                                                = 25.250 g / 2.175 g
•                                                               = 11.609
• So the goldsmith claims that relative density of pure gold is 19.32 g/cm^3
• Therefore the  gold ornament is not pure, since relative density 11.609 is far less than relative density of pure gold that is 19.3

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