Note that the answers must be well-motivated S 1) A process stream with a mass flow of 1.5 kg / s containing 4 mass-% ethanol and the remainder water is mixed with a stream which, in addition to water, contains 2.5 mass-% ethanol. The mass flow of this stream is 0.65 kg / s. Calculate the composition of the mixed current. Note that the answers must be well-motivated 1) A process stream with a mass flow of 1.5 kg / s containing 4 mass-% ethanol and the remainder water is mixed with a stream which, in addition to water, contains 2.5 mass-% ethanol. The mass flow of this stream is 0.65 kg / s. Calculate the composition of the mixed current