A+B2U+3S A Chemical Engineer wants to produce the substance U according to the above reaction. For this purpose, the liquid phase reaction was carried out under isotherm conditions with an equimolar input, which initially did not contain products, in a batch reactor with a volume of 2L. The concentration of component A was measured as in the table below. - According to the data in the table, what is the approximate concentration of the U component during the experiment