Determine amount of NaCl that dissolved and calculate its solubility in methanol.

Question

Data:

Initial mass: 10.417

Final mass: 11.855

Used 50mL of methanol to filtrate substance

Answer 1

mass = final - initial = 11.855 - 10.417 = 1.438 units (I'll assume grams)

volume = 50 ml

solubility = 1.438 g/50 ml = 0.02876 g/ml = 0.03 g/ml (to 1 significant figure because 50 ml has only 1 s.f.)