13,500 kg/h of a feed consists of 8 wt% acetic acid in water. the acetic acid is to be removed by extraction to give a raffinate containing 1 wt% acetic acid. the four solvents whose distribution coefficients (in mass fraction units) are given below are candidates for extraction. assuming that the solvents are immiscible with water, calculate the flowrate (in kg/h) of each required for the extraction.

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables