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you just found a metallic object in a creek bed. you have found its mass to be 96.5 g, and it displaces 5mL of water. what is the substance?
A.) aluminum
B.)iron
C.)gold
D.)none of the above

Verified Answer :

AL2006

Judging by the density (19.3 g/ml) there's a very good chance that it could be gold.

Answer:

C) gold

Explanation:

Given:

Mass of the object = 96.5 g

Volume of water displaced= 5 ml

Formula:

\(Density = \frac{Mass}{Volume} \\Density of metal =\frac{96.5 g}{5ml} = 19.3 g/ml\)

The known densities of Al, Fe and Au are:

Density of Al = 2.7 g/ml

Density of Iron (Fe)= 7.87 g/ml

Density of gold (Au) = 19.3 g/ml

Therefore, the metallic object is gold

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