If 35 ml of the original 0.500 M #K_2Cr__2O_7(aq)# solution was evaporated to dryness, what mass #KaCr_2O_7(s)# would remain in the evaporating dish?
Originally, you have a
This represents a molar quantity of
This molar quantity represents a mass of
Of course, the salt might be solvated by several water molecules. This would increase the mass.