CH 2 Homework tem 12 Part A Sterling silver contains silver and copper metals. I

Question

CH 2 Homework tem 12 Part A Sterling silver contains silver and copper metals. If a sterling silver chain contains 37.0 g of silver and 3.00 g of copper, what is the percent of silver? Express the percent to three significant figures. View Available Hint(s) percent of silver Submit Part B A 14-karat gold ring contains 835 g of gold, 2.99 g of silver, and 2.99 g of copper Calculate the percent of gold in the 14-karat ring Express the percent to three significant figures. View Available Hints percent of gold

Explanation / Answer

mass of silver    = 37g

mass copper     = 3g

total mass         = 37+3 = 40g

mass percent of silver   = 37*100/40     = 92.5%

part-B

mass of gold    = 8.35g

mass of silver   = 2.99g

mass of copper = 2.99g

total mass    = 8.35+2.99+2.99   = 14.33g

mass percent of gold   = 8.35*100/14.33   = 58.27%

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