what mass of iodine , I2 (molar mass = 253.80 g/mol), must be used to prepare a 0.96 m solution if 100.0 g of ethanol, C2H5OH, is used?what mass of iodine , I2 (molar mass = 253.80 g/mol), must be used to prepare a 0.96 m solution if 100.0 g of ethanol, C2H5OH, is used?