Question 14 a solution of methyl acetate c3h6o2 and water that is 25.% methyl acetate by mass is boiling at 94.7°c. the vapor is collected and cooled until it condenses to form a new solution. calculate the percent by mass of methyl acetate in the new solution. here's some data you may need: normal boiling point density vapor pressure at 94.7°c methyl acetate 57.°c 0.93gml 2360.torr water 100.°c 1.00gml 630.torr be sure your answer has 2 significant digits. note for advanced students: you may assume the solution and vapor above it are ideal.

Determine the time of the day and month of the year at which the peak sensible cooling load occurs for a top floor, north-eastern corner room of an office building in durban for the following conditions: floor area: 8 x 8 x 3 m east and north walls: 115 mm face brick (outside), 20 mm air space, 115 mm ordinary brick (inside) with 15 mm plaster roof construction: suspended plasterboard ceiling, 450 mm air space, 150 mm concrete, 75mm screed, waterproofing no heat transfer across other surfaces window area 3x 1,5 m high in north wall only. ordinary glass with venetian blinds. lights and occupants : from 07: 00 to 18: 00 average light density: 25 w/m2 number of occupants : 5 seated, light office work room temperature 24°c