What is the volume of a solution that has a mass of #21.0*g# and has a density of #19.3*g*mL^-1#?

1 Answer
anor277
Jan 26, 2017

A bit over #1*mL..........#

Explanation:

#"Density,"# #rho# #=# #"Mass"/"Volume"#, and we use this quotient.

We have #rho# and #"mass"#. And thus we perform the operation:

#"Volume"# #=# #"Mass"/rho# #=# #(21.0*cancelg)/(19.3*cancelg*mL^-1)# #=# #??*mL#.

Dimensionally, this is sound. We want an answer with units of volume, we get an answer with units: #1/(1/(mL))=mL# as required. The use of dimensions in your answer allow you to decide whether you are correct when you divide instead of multiply or vice versa.

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