Question #265426

Suppose that the steel gas tank in your car is completely filled when the temperature is 16 °C. How many gallons will spill out of the 88-Liters tank when the temperature rises to 40 °C?


1
Expert's answer
2021-11-14T17:11:18-0500

ΔT=4016=24  °CΔT = 40 -16 = 24 \; °C

Change in volume of steel tank =ΔVx= ΔV_x

Change in volume of gasoline =ΔVg= ΔV_g

Coefficient of volume expansion of steel tank

βx=30×106  1/°Cβ_x = 30 \times 10^{-6} \; 1/°C

Coefficient of volume expansion of gasoline

βg=950×106  1/°Cβ_g = 950 \times 10^{-6} \; 1/°C

V0=88  L=23.24  galV_0 = 88 \;L = 23.24 \;gal

Change in volume of steel tank is

ΔVx=βxV0ΔTΔV_x = β_xV_0ΔT

Change in volume of gasoline is

ΔVg=βgV0ΔTΔV_g = β_gV_0ΔT

Required volume:

ΔV=ΔVgΔVxΔV=(βgβx)V0ΔTΔV=(950×10636×106)(23.24  gal)(24  °C)ΔV=0.509  galΔV = ΔV_g-ΔV_x \\ ΔV=(β_g -β_x)V_0ΔT \\ ΔV=(950 \times 10^{-6} -36 \times 10^{-6}) (23.24 \;gal) (24 \; °C) \\ ΔV= 0.509 \;gal

Answer: 0.509 gal


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