Aliquid mixture containing 40.0 w1% n-octane and the balance n-decane flows into a tank mounted on a balance. the mass in kg indicated by the scale is plotted against time. the data fall on a straight line that passes through the points (t-3 min, m-100 kg) and (t-12 min, m - 300 kg) * estimate the volumetric flow rate of the liquid mixture, b. what does the empty fank weigh?