Answer
$1.63g/ml$
Work Step by Step
Total grams subtract grams of solid equals grams of toluene.
$58.58g - 32.65g = 25.93g$
Grams of toluene divided by temperature equals volume of toluene.
$25.93g\div0.864g/ml=30.01ml$
Total volume subtracted by volume of toluene equals volume of solid.
$50.00ml-30.01ml=19.99ml$
Grams of solid divided by volume of solid equals density of solid.
$32.65g\div19.99ml=1.63g/ml$
