What is the density of 18.0-karat gold that is a mixture of 18 parts gold, 5 parts silver, and 1 part copper? (These values are
1 answer:
Answer:
Density of 18.0-karat gold mixture is .
Explanation:
A mixture of 18 parts gold, 5 parts silver, and 1 part copper.
Let mass of gold be 18x
Let the mass of silver be 5x
Let the mass of copper be 1x
The density of gold =
The density of silver =
The density of copper =
Volume of the gold in the mixture =
Volume of the silver in the mixture =
Volume of the copper in the mixture =
Mass of the mixture = M = 18x+5x+1x =24x
Volume of the mixture =
Density of the mixture:
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But Ohm's law:
tells us that if the equivalent resistance decreases, the total current in the circuit increases. The power dissipated through the circuit (and so, the heat produced) depends on the square of the current:
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