Crude oil is fractioned by two separating columns. The incoming crude oil is composed of the following weight fractions: 0.0300 gas, 0.270 gasoline, 0.100 kerosene, 0.130 diesel, 0.120 heating oil, 0.100 lubricating oil, and the rest solids. The crude oil is fed into the first column at 1.330 × 103 kg/hr producing a stream of gas, a 5:1 gasoline to kerosene stream, a stream containing kerosene and diesel, and 736 kg/hr stream of the bottoms. The bottoms, containing diesel, lubricating oil, heating oil, and solids, is fed into a second distillation column that separates the components into three streams. The top stream contains diesel and heating oil. The middle stream contains heating oil and lubricating oil, and the bottom stream contains the solids. If you want to produce 245 kg/hr of the stream containing heating and lubricating oil, find:

1 - What is the flow rate, m3, of the gasoline and kerosene stream coming off the first column?

2 - What is the composition of m7, the heating oil and lubricating oil stream coming off the second column?

3 - What is the composition of m6, the diesel and heating oil stream coming off the second column?