How would I solve this?

Question

You just found a metallic object in a creek bed. You have found its mass to be 96.5 g, and it displaces 5 mL of water. What is the substance?

Aluminum - 2.7

Iron - 7.9

Gold - 19.3

Answer 1

If the numbers you provide correspond to the densities of the given metal in g/ml or kg/L, it should be gold.

Density = mass/volume, so:

96.5g/5ml = 19.3 g/ml

Answer 2

your density numbers have no units, so they are useless.



5 mL of water is 5 cc

density is 96.5 g / 5 cc = 19.3 g/cc

gold density 19.3 g/cc

so this is gold

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