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Which element or elements are alloyed with gold to make the following types of “colored gold” used in the jewelry industry? For each type, also indicate what type of alloy is formed: (a) white gold, (b) rose gold, (c) green gold.

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Deanna Hettinger
Deanna HettingerLv2
24 May 2020
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Related questions

You are hiking in the mountains and find a shiny gold nugget. It might be the element gold, or it might be “fool’s gold,” which is a nickname for iron pyrite, FeS2. What kinds of experiments could be done to determine if the shiny nugget is really gold?

A typical gold bar has dimensions of being 82mm long, 45mm wide and 16mm deep. The current price for gold is $1,368 per ounce (mass).
a. What is the total surface area, in square inches, of the gold bar?
b. Determine how many mL of gold were used to make the gold bar.
c. If the density of gold is 19.3 g/cm3, what would be the cost of this gold bar?

A cube of gold that is 1.00 cm on a side has a mass of 19.3 g. A single gold atom has a mass of 197.0 amu. (a) How many gold atoms are in the cube? (b) From the information given, estimate the diameter in Å of a single gold atom. (c) What assumptions did you make in arriving at your answer for part (b)?

The number of gold atoms in 1.00 cm cube is:

b) The volume of all gold atoms is 1 cm3. We can calculate the volume of single gold atom by dividing volume of cube with the number of atoms:

If we take that gold atom is a sphere, we can calculate radius of atom:

The diameter of single gold atom is equal to 2r =3.17 Å.

c) We assumed that gold atom is a perfect sphere, and that gold spheres perfectly fill the volume of a cube, not leaving any empty space. We know that this is impossible in reality.

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