Arectangular piece of platinum has dimensions of 3.50 cm*2.16 cm*1.08 cm and weighs 175.5 g. what is the density of platinum?

21.5 g/cm³

Explanation:

We define density as mass / volume.

We have the mass of the Pt piece → 175.5 g

Therefore, we must find out the volume with the data of dimensions:

3.50 cm . 2.16 cm . 1.08 cm = 8.16 cm³

Density is 175.5 g / 8.16 cm³ = 21.5 g/cm³

elements make up everything, and they combine to make compounds.

the answer is c

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.