0.1 kg of natural rubber is mixed with sulfur, molded into a rectangular strip with a 1 cm by 1 cm square cross section and cured at high temperature, leading to a molecular weight between cross links of Mc = 5000 g/mol. Calculate the length of this rubber band if one end is attached to the ceiling and a 1 kg mass is suspended in tension. Assume rubber has a density of 1 g/cm3 , and room temperature (300 K).