Question #28586

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Answer 1 · 2018-01-12T04:47:01

#a. 75g#
#b. 175ml#

Given the %mass of the solution and the mass of the solution, mass of solute can be computed as;

#"%mass solution"="mass solute"/"mass solution"#

#"mass solute"="%mass solution" xx "mass solution"#

#"mass solute"=0.30xx250g=75g#

Then, find the mass of the solvent, knowing that;

#"mass solution"="mass solute"+"mass solvent"#

#"mass solvent"="mass solution"-"mass solute"#

#"mass solvent"=250g-75g=175g#

Now, find the volume of the solvent; knowing that the density of water @ #4^oC#= 1g/ml; so that,

#rho=m/V#
#V=m/rho#
#V=(175cancel(g))/((1cancel(g))/(ml))#
#V=175ml#