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1. Compound A dissociates into products B and C according to 4A -->B + 6C at a rate

The reaction occurs in a constant volume 5 liter vessel containing only species A at concentration 25 kmol/m³.

A) If 10 mol of A reacts how much B and C are produced

B) Develop expressions for the number of moles of A B C present at any time, t

C) How long would it take 10 mol of A to have reacted?

2. Evaporation of acetone from an open nail polish bottle occurs at a rate of 0,05 gram/minute into a room that is 4mx6mx3m in size and has a ventilation rate of 2m³/min.

A) Compute the steady state concentration of acetone in the room while there remains acetone in the nail polish bottle.

B) Assuming the air in the room is initially free of acetone compute the time for acetone to reach 90% of the steady state concentration.