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To calculate the density of the "gold penny" and determine the composition using the table, you'll need to follow these steps:

### Assumptions:
1. **Gold penny**: Likely made from a mixture of metals (e.g., copper, zinc, and maybe a coating of gold or brass).
2. **Densities provided**: You have the densities of copper, zinc, gold, brass, and aluminum.

However, before I can calculate the density of the gold penny, I'd need additional details, such as the mass and volume of the gold penny. 

If you provide the following, I can help:
- Mass of the penny.
- Volume of the penny.

Once you have the mass and volume, density can be calculated using the formula:
\[
\text{Density} = \frac{\text{Mass}}{\text{Volume}}
\]

With the calculated density, we can then compare it to the densities in the table to estimate the composition.

Would you like to provide the missing information, or is there more context to the problem that you can share?

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**Here are some follow-up questions related to the topic:**
1. How do you calculate the volume of irregular objects like a penny?
2. What role does density play in determining material composition?
3. Can alloys have densities that fall between those of their component metals?
4. How could you experimentally verify the composition of a gold penny?
5. How do you distinguish between gold-plated and solid gold objects using density?

**Tip:** Knowing both mass and volume is essential for calculating density. Even a small error in one can lead to significant changes in the result.

Calculate the density of the gold penny. Use the table below to determine the chemical composition of the two pennies.

Learn how to calculate the density of a gold penny and determine its chemical composition using a table of metal densities. This problem involves understanding key concepts like density, mass, and volume. Suitable for students in Grades 8-10.

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