Determination of the Surface Tension of a Liquid by the Capillary Rise Method: A group of students enrolled in a Physical Chemistry Laboratory class performed an experiment on the determination of the...

Please answer 7, 8, and 9. Thank you

Extracted text: Determination of the Surface Tension of a Liquid by the Capillary Rise Method: A group of students enrolled in a Physical Chemistry Laboratory class performed an experiment on the determination of the surface tension of a liquid by the capillary rise method. The data gathered by the group are documented in the tables below. Solve for the unknown data for #s 1-12. Compounds Average Height, dm Density (g/ml) Water 0.16 0.9998 Benzene 0.08 0.7882 Chloroform 0.03 1.4592 Methanol 0.07 0.8707 Compounds Theoretical Value of Surface Calculated Surface Tension at % Error Tension at 20°C, dyne/cm 20°C, dyne/cm (Water as Calibrating Liquid) Water 72.86 Benzene 28.88 Chloroform 27.5 Methanol 22.7 3. 6. Calculated Surface Tension at 20°C, dyne/cm (Benzene as Calibrating Liquid) Compounds Theoretical Value of Surface % Error Tension at 20°C, dyne/cm Water 72.86 7. 10 Benzene 28.88 11 Chloroform 27.5 12 Methanol 22.7