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After the label fell off a bottle containing a clear liquid believed to be benzene, a chemist measured the density of the liquid to verify its identity. A 25.0 mL portion of the liquid had a mass of 21.95 g. A chemistry handbook lists the density of benzene at 15°C as 0.8787 g/mL. Is the calculated density in agreement with the tabulated value?



Answer :

Eduard22sly

The calculated density of the benzene is in agreement with the tabulated value

What is density?

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the above formula, we can determine the density of the benzene. Detail below

How to determine the density of the benzene

From the question given above, the following data were obtained:

  • Mass of benzene = 21.95 g
  • Volume of benzene = 25 mL
  • Density of benzene =?

Density = mass / volume

Density of benzene = 21.95 / 25

Density of benzene = 0.878 g/mL

Thus, the density of the benzene is 0.878 g/mL

Comparison

  • Tabulated density of benzene = 0.8787 g/mL
  • Calculated density of benzene = 0.878 g/mL

Thus, the calculated density is in agreement with the tabulated density

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