The density of solid aluminum is 2.70 . if a 1g peice of aluminum is dropped in a cup of water, it will . (the density of water is 1.00 g/cm3 )

It will sink

Explanation:
The density of the water is 1 g/cm³
- Elements having less density than water will float
- Elements having more density than water will sink

We are given that the density of density of aluminum is 2.7 g/cm³ which is more than the density of the water.
Therefore, it will sink.

Hope this helps :)