# Problem: Pure gold is usually too soft for jewelry, so it is often alloyed with other metals.How many gold atoms are in an 0.351-ounce, 18 K gold bracelet? (18 K gold is 75% gold by mass.)

###### FREE Expert Solution
84% (370 ratings)
###### FREE Expert Solution

Avogadro’s number = 6.022 x 1023 entities

entities = atoms, ions, molecules, particles, formula units

Calculate the # of atoms in 0.351-ounce 18 K gold bracelet:

84% (370 ratings)
###### Problem Details

Pure gold is usually too soft for jewelry, so it is often alloyed with other metals.

How many gold atoms are in an 0.351-ounce, 18 K gold bracelet? (18 K gold is 75% gold by mass.)

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Mass Percent concept. You can view video lessons to learn Mass Percent Or if you need more Mass Percent practice, you can also practice Mass Percent practice problems .

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Based on our data, we think this problem is relevant for Professor Mignerey's class at UMD.

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