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\begin{tabular}{|c|c|}
\hline
Metal & \begin{tabular}{c}
Density \\
[tex]$\left( g / cm^3 \right)$[/tex]
\end{tabular} \\
\hline
Aluminum & 2.64 \\
\hline
Iron & 7.50 \\
\hline
Lead & 11.34 \\
\hline
\end{tabular}

You have discovered a meteorite that seems to be metallic. Its mass is 370 g, and you calculate the volume to be [tex]$50 \, cm^3$[/tex]. Based on the three values provided, which metal would most likely match the composition of the meteorite?

A. Aluminum
B. Iron
C. Lead
D. None of these (density is less than 1.0)


Sagot :

To determine which metal the meteorite most likely matches, we need to calculate the density of the meteorite and compare it to the densities given for aluminum, iron, and lead.

### Step-by-Step Solution:

1. Calculate the Density of the Meteorite:
The formula to calculate density is:
[tex]\[ \text{Density} = \frac{\text{Mass}}{\text{Volume}} \][/tex]

Given:
- Mass of the meteorite, [tex]\( m = 370 \, \text{g} \)[/tex]
- Volume of the meteorite, [tex]\( V = 50 \, \text{cm}^3 \)[/tex]

Substitute the given values into the density formula:
[tex]\[ \text{Density of meteorite} = \frac{370\, \text{g}}{50\, \text{cm}^3} = 7.4 \, \text{g/cm}^3 \][/tex]

2. Compare the Calculated Density to Given Densities:
- Aluminum: [tex]\( 2.64 \, \text{g/cm}^3 \)[/tex]
- Iron: [tex]\( 7.50 \, \text{g/cm}^3 \)[/tex]
- Lead: [tex]\( 11.34 \, \text{g/cm}^3 \)[/tex]

The density we calculated for the meteorite is [tex]\( 7.4 \, \text{g/cm}^3 \)[/tex].

3. Assess the Match:
- The density of the meteorite ([tex]\( 7.4 \, \text{g/cm}^3 \)[/tex]) is not equal to the density of aluminum ([tex]\(2.64 \, \text{g/cm}^3 \)[/tex]).
- It is also not equal to the density of iron ([tex]\(7.50 \, \text{g/cm}^3 \)[/tex]).
- Similarly, it does not match the density of lead ([tex]\(11.34 \, \text{g/cm}^3 \)[/tex]).
- Additionally, the density of the meteorite ([tex]\(7.4 \, \text{g/cm}^3 \)[/tex]) is greater than [tex]\(1.0 \, \text{g/cm}^3 \)[/tex], so it does not correspond to the option "none of these (density is less than 1.0)".

Since the meteorite's density ([tex]\(7.4 \, \text{g/cm}^3 \)[/tex]) does not exactly match any of the provided metal densities, the composition of the meteorite is most likely:

[tex]\[ \textbf{unknown} \][/tex]