Question 2.24: Calculate the volume (in mL) of 100. g of ethyl alcohol.

From Table 2.5 we see that the density of ethyl alcohol is 0.789 g/mL. This density also means that 1 mL of the alcohol has a mass of 0.789 g (1 mL/0.789 g).

For a conversion factor, we can use either

\frac{g}{mL}      or        \frac{mL}{g}

Solution map: g→ mL,

(100.    \cancel{g}) (\frac{1   mL}{0.789    \cancel{g}}) = 127 mL of ethyl alcohol

TABLE 2.5 | Densities of Some Selected Materials