Urea dissolved in aqueous solution is degraded to ammonia and co2 by the enzyme eads. conversion rate is controlled by transfer of urea to the surface of the beads through liquid film, and the conversion takes place on the surfaces of the beads. the following parameters are given for the system. k 0.32 cm/s; km 235 mg/l m 0 sb 950 mg urea/l a. determine the surface concentration of urea. b. l4 mg urea/cm' support surface s. determine the rate of urea degradation under mass transfer controlled conditions.

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

b) nuclear ive learned that in a pedtrodic table

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.