Atomato can be idealized as a sphere with internal heat generation that is due to ripening. consider a tomato with a diameter of 80 mm, density of 840 kg/m", thermal conductivity of 0.5 w/(mk), uniform internal hea generation of 4000 j/(kg*day), and a film coefficient of 7.5 w/(m²k). if the tomato is wrapped in 5 mm of urethane foam, k.026 w/(mk), estimate the steady state temperature at the center of the sphere with a surrounding air temperature of 2°c.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.