You add 8.6g iron to 20.60mL of water and observe that the volume of iron and water together is 21.69mL . Calculate the density of iron.
Express your answer to two significant figures with the appropriate units.

Question

You add 8.6g iron to 20.60mL of water and observe that the volume of iron and water together is 21.69mL . Calculate the density of iron.
Express your answer to two significant figures with the appropriate units.

sinbearciante · Answer

Density = mass/volume. Mass: 8.6g; Volume (of the iron): 21.69-20.60 = 1.09mL. D = (8.6g)/(1.09mL) = 7.51 g/mL ~ 7.5 g/mL. Not sure what units you are looking for, though.