a jeweler wants to make a 14-karat necklace weighing 3.6 grams.which of the following mass of pure gold will be needed by the jeweler?
A.2.1 grams of pure gold
B.3.1 grams of pure gold
C 4.1 grams of pure gold
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Answer:im just gonna guess but i think its b.
Explanation: i guessed it tell me if its correct
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Given - Quality: 14 karat
Weight of necklace: 3.6 grams
To find - Mass of pure gold in the jwellery
Solution - 14 karat gold is comprised of 58.3% gold. So, to calculate weight of gold in necklace, 58.3% concentration of 3.6 grams of necklace will be calculated.
Mass of gold in necklace = 58.3*3.6/100
Mass of gold in necklace = 2.09 grams
Mass of gold in necklace = 2.1 grams
Hence, mass of pure gold in the given necklace will be A. 2.1 grams
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