The flask of a rotary evaporator initially contains 10 kg of grape juice. The rate of evaporation of water given as mV = 0.09 0.0004t, where, mv in kg/min and t is time in minutes. The concentration of juice in the flask was measured to be 35 oBrix after 80 minutes. Determine the initial concentration of grape juice in oBrix. Ltfen birini sein: a. 21.38 b. 8.46 c. 10.35 d. 12.28 e. 14.28