Question

Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. Scientist B dissolved 2.0 pounds of salt in 7.0 pints of water. Which scientist made a more concentrated salt solution? Explain.

Answer 1

`Concentration\ of\ substance=(constituent)/(mixture)*100\%\\\\ 1.\\ constituent=1kg\\ mixture=1kg+3l=4kg\\\\ Concentration=(1)/(4)*100\%=25\%\\\\ 2.\\ constituent=2\ pounds=2\ pints\\ mixture=7\ pints\\\\ Concentration=(2)/(7)*100\%=28,6\%\\\\ Scientist\ B\ made\ more\ concentrated\ salt\ solution.`