Bijan used a table of densities to try to identify the metal. The table is shown below.
Metal
aluminium
brass
copper
gold
iron
silver
steel
tin
Density in g/cm
2.7
8.5
8.9
19.3
7.9
10.5
7.9
7.3
с
Which metal might Bijan have been investigating?
Can Bijan be sure of this answer? Explain why/why not.

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