Question

A sample found on the lab bench is analyzed and found to contain Y, Ba, Cu, and O. The inorganic compound contains 13.34% Y, 41.23% Ba, and 16.81% O. When 0.173 grams of the sample is dissolved in 25 mL of cyclohexane the mixture freezes at 6.28°C. WHAT IS THE MOLECULAR FORMULA FOR THE INORGANIC COMPOUND? f.p. cyclohexane=6.55°C kf (cyclohexane) = 20.2°C/m ?(cyclohexane) = 0.779 g/mL kf (H2O) = 1.858°C/m kb (H2O) = 0.512°C/m

Answer 1