You are working in a small lab with a dimension 15ft15ft10ft and about 10L of acetone is spilt on the floor and evaporated. Assuming the door is closed and no air can flow in or out from the lab. The lab temperature is at 30C and outside pressure is at 1atm. (a) Calculate the number of moles of air and acetone in the room. (5 marks) (b) If 5000ppm of acetone is inhaled, it can be severely hazardous to human. Is it safe for you to work in the lab? Proof it by calculation. (10 marks)