18 be IN bow 03 Plot on Figure 11 points to show the volume and the temperature of the air in the flask when the flask is as shown in Figure 9a the flask is as shown in Figure 9d. The temperature of the hot water bath is 86 C Room temperature is 19C Vi -48 cm V-255 cm [3 marks] Figure 11 \/cm 0 20 40 60 80 100 8/C 18 B1800/3 15 Do no outside box 03 This question is about an experiment to estimate absolute zero Figures 9a to Od show the stages in the procedure carried out by a student An empty flask fitted with a tube and an open valve is placed in water bath H containing hot water. The air inside the flask is allowed to come into thermal equilibrium with the water. The valve is then closed, trapping a certain volume of air, as shown in Figure 9a. Figure 9a valve closed wo water bath H (hot water) The flask is inverted and placed in water bath C in which the water is at room temperature. The air inside the flask is again allowed to come into thermal equilibrium with the water, as shown in Figure 9b Figure 9b water bath C (room temperature) Question 3 continues on the next page