What is the likely identity of a substance (see Table 10-1) if a sample has a mass of 16.0 g when measured in air and an apparent mass of 15.2 g when submerged in water?

Question

Which of the following is it?
-copper
-gold
-lead
-aluminum
-iron or steal
-concrete

(Note: Can only select one)

Answer 1

I assume table 10-1 lists the density of the materials in the list of possible metals.
density = mass in air/(mass in air-mass in H2O)= ?
Compare with the numbers in table 10-1

Answer 2

i nutted