Question

An empty Erlenmeyer flask weighs 241.3 g. When filled with water (d = 1.00 g/cm³), the flask and its contents weigh 489.1 g. (a) What is the flask’s volume?

Answer 1

The answer is- Volume of flask = 247.8 $cm^3$ or 247.8 mL.

Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.

What is the formula of volume in terms of density?

• Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-

$d = \frac{m}{V}$

Thus, volume can be expressed as-

$V =\frac{m}{d}$

• Now, mass of empty flask = 241.3 g and the mass of  (flask + Water) = 489.1 g.

Thus, mass of water = $489.1\ g- 241.3\ g = 247.8\ g$.

• Thus, mass of water = 247.8 g and density of water =$1.00\ g/cm^3$. Its volume is calculated as-

$V = \frac{247.8\ g}{1.00\ g/cm^3}=247.8\ cm^3$

• Hence, volume of flask = 247.8 $cm^3$ or 247.8 mL.

To learn more about Density and Volume, visit:

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