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anonymous

  • one year ago

A gold‐colored ring is found to weigh 2.542 g at 20oC. The ring is dropped into a graduated cylinder filled with water, and is found to displace 0.33 mL of liquid. If the density of 14 carat gold is 12.9 to 14.6 g/mL at 20oC, is the ring made of gold? explain your answer. Maybe I'm just misreading this question, but I don't understand how to go about this.. :/

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  1. NathalyN
    • one year ago
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    You need to calculate the density of the gold-colored ring using the given mass and measured volume, and then compare that figure to the given density of 14 carat gold. Use the following formula: density of ring = (mass of ring) / (volume of ring) density of ring = (2.542 g) / (0.33 mL) density of ring = 7.6969696 g/mL or 7.7 g/mL rounded to two significant figures Answer: The density of 14 carat gold starts at 12.9 g/mL, and the density of the ring is way below that figure. The only conclusion is that the ring is NOT made of gold.

  2. NathalyN
    • one year ago
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    @sunshinePoet

  3. anonymous
    • one year ago
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    Oh wow I was totally overthinking that question as I tend to do so often! =S Thank you so much for your help!!

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