Based on the density of your penny, which metal is your penny mostly made of? Prove it using the densities below.Zinc (Zn) = 7.1 g/ml Silver (Ag) = 10.5 g/ml Gold (Au) = 19.3 g/mlCopper (Cu) = 8.9 g/ml Platinum (Pt) = 20.5 g/ml Brass (alloy) = 8.40 g/ml

To answer this question, you would first need to determine the density of your penny. Here's how you can do it:

1. Measure the mass of the penny using a scale. Record this value in grams (g).

2. Measure the volume of the penny. This can be done by water displacement. Fill a graduated cylinder with a known volume of water, then drop the penny in and measure the change in volume. This change in volume is the volume of the penny. Record this value in milliliters (ml).

3. Calculate the density of the penny by dividing its mass by its volume (Density = Mass/Volume). The result will be in g/ml.

4. Compare the calculated density of your penny with the given densities of the metals. The metal with the density closest to the calculated density of your penny is likely the main component of your penny.

Remember, this is a simplified method and real-world factors such as impurities in the metal can affect the density.