The density of ethanol, a colorless liquid that is commonly known as grain alcohol, is 0.798 g/mL. How would you calculate the mass of 17.4 mL of the liquid?

1 Answer
anor277
Aug 30, 2016

Simply mulitply the volume by the density. As we shall see, this is dimensionally consistent.

Explanation:

#"density "rho# #=# #"Mass"/"Volume"#, and thus units of #g*mL^-1# are reasonable.

For this problem:

#17.4*cancel(mL)xx0.798*g*cancel(mL^-1)# #~=# #14*g#

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