4. A teacher demonstrated the formation of silicon tetruchloride SKI, by passing dry chlorine over 10 g of heated silicon powder until all the silicon hud neusted. She collected the liquid silicon tetrachloride produced and then purified it by distillation. At the end of the preparation she had 3.5 cm of silicon tetrachloride Density of Silicon tetrachlonde was 1.48 g/mL. Calculate her percentage yield. Sies) + CX) Sicha)