# Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3. A fitting composed of common brass has a total volume of 115.0 cm3 . How many atoms of zinc does the fitting contain?

Question
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Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3. A fitting composed of common brass has a total volume of 115.0 cm3 . How many atoms of zinc does the fitting contain?

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Step 1

Here we have:

Volume of common brass = 115.0 cm3

Density of common brass = 8.48 g/cm3

As we know:

Step 2

According to question common brass contains 37.0 % Zinc by mass.

i.e.,

Step 3

Relation between mass and ...

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