W The thermal conductivity ko of Helium gas at 20°C is 0.14 m•K' Part A: Radius of a Helium Atom Determine the effective hard sphere radius of a Helium atom. Enter the value in units of pm. Part B: Variation in Thermal Conductivity Determine the percent increase in the thermal conductivity when the temperature of the Helium gas is raised to 83°C. Enter the value as a percent.

W The thermal conductivity ko of Helium gas at 20°C is 0.14 m•K' Part A: Radius of a Helium Atom Determine the effective hard sphere radius of a Helium atom. Enter the value in units of pm. Part B: Variation in Thermal Conductivity Determine the percent increase in the thermal conductivity when the temperature of the Helium gas is raised to 83°C. Enter the value as a percent.