Question

Which of these has the highest volume
A. 1 kg of lead
B. 1 kg of iron
C. 1kg of gold
D. 1 kg of aluminum

Answer 1

To determine which of the materials has the highest volume when comparing equal masses (1 kg), we need to consider the densities of each material:

- **Lead:** Density ≈ 11,343 kg/m³
- **Iron:** Density ≈ 7,874 kg/m³
- **Gold:** Density ≈ 19,320 kg/m³
- **Aluminum:** Density ≈ 2,700 kg/m³

Using the formula for volume (Volume = Mass / Density), we can calculate the volume of each material:

A. **Lead:**
Volume = 1 kg / 11,343 kg/m³ ≈ 0.0881 m³

B. **Iron:**
Volume = 1 kg / 7,874 kg/m³ ≈ 0.127 m³

C. **Gold:**
Volume = 1 kg / 19,320 kg/m³ ≈ 0.0518 m³

D. **Aluminum:**
Volume = 1 kg / 2,700 kg/m³ ≈ 0.370 m³

Now, comparing the volumes calculated:
- Lead: ≈ 0.0881 m³
- Iron: ≈ 0.127 m³
- Gold: ≈ 0.0518 m³
- Aluminum: ≈ 0.370 m³

Aluminum has the highest volume among the choices provided. Thus, the answer is:

**D. 1 kg of aluminum**