Q88E - Chemistry (OpenStax)

Question

Question: Osmium is one of the densest elements known. What is its density if 2.72g has a volume of 0.121 cm³?

Step-by-Step Solution

Answer

22.5 g/ cm³ is the density.

Step 1: Determine the definition of Density

A physical parameter that provides information on the mass of a sample divided by its volume is known as density.

Step 2: Calculate density.

It is given that,

            Mass = 2.72g

            Volume = 0.121 cm³

\(\begin{array}{c}{\rm{Density}}\,{\rm{ = }}\,\,\frac{{Mass}}{{Volume}}\,\\{\rm{Density}}\,{\rm{ = }}\,\,\frac{{2.72gm}}{{0.121\,c{m^3}}}\,\\ = 22.47\,g/c{m^3}\\ \approx 22.5\,g/c{m^3}\end{array}\)

Therefore, density is 22.5 g/ cm³ (rounding off up to 3 significant figures).