Question

8.26 Indicate whether the final volume of gas in each of the following is the same, larger, or smaller than the initial volume, if pres- sure and amount of gas do not change: a. A volume of 505 mL of air on a cold winter day at -15 °C is breathed into the lungs, where body temperature is 37 °C. b. The heater used to heat the air in a hot-air balloon is turned off. c.A balloon filled with helium at the amusement park is left in a car on a hot day.

Answer 1

Answer is & @ At conplant = k Fear Change U1 ve so5 mL & V2 = ? & V₂ = mele(n) and pressure (b) ideal gas equation cehere k=NR = 12 TI= 258k(~15°c) T2 = 310k (37°c). so5mL x 310k 258k 606.78mL (so larger) UITZ Look = U2 = TI et finas temperature (T2) is decreased by teeruing heater off ; Uz algo deereased : so smeller 9 Now final temperature (T2) is increened by letting balloon in car im not day ; so v2 will also gets increased (directly prepertocal) ; so larger.