steel 1.0 km i t linear expansion of steel is 12 x 10-yCe. A railroad track is m
ID: 1584429 • Letter: S
Question
steel 1.0 km i t linear expansion of steel is 12 x 10-yCe. A railroad track is made of individual rails of length. B -10 °C and a hot day at 30 A) 0.62 cm B) 24 cm 48 cm D) 480 cm y what length would these rails change between a cold day when the temperature is E) 620 cm 11. A tanker r ship is filled with 2.25 x 10 m of gasoline at a refinery in southen Texas when the temperature is 17.2 °C. Wh unloaded inorga oline is 9.50 × 10-C', how much has the volume of the gasoline decreased when it is A) 1.50 x10am? B) 66.2 m? C) 1290 D) 3400 E) 1.05×10. en the ship arrives in New York City, the temperature is 1.3 °C. If the coefficient of volumetric 12. Which one of the following statements best explains why gases are not commercially sold by volume? A) B) C) D) B) Gas volume is negligible. Gas volume is difficult to measure. Gas volume depends on the type of gas. Gases have comparatively low densities. Gas volume depends on temperature and pressure. 13. How many moles are in a 0.53-kg sample of sulphur dioxide, SO2? (atomic masses: S-32 u; O- 16 u) E) 5.0 x 1024 A) 5.2 B) 8.3 C) 48 D) 1.6×104 A sample of a monatomic ideal gas is originally at 20 °C. What is the final temperature of the gas if the pressure is doubled and volume is reduced to one-fourth its initial value? A) 900 °C B) 10°C C) 80°C D)-130 °C E)-260°C 14. 15. A bubble with a volume of 1.0 cm2 forms at the bottom of a lake that is 20.0 m deep. The temperature at bottonn of the lake is 10.0 °C·The bubble rises to the surface where the temperature is 25.0 °C. Assume the bubble is small enough that its temperature always matches that of its surroundings. What is the vol of the bubble just before it breaks the surface of the water? A) 2.1 cm B) 2.8 cm C) 3.1 cm D) 6.0 cm E) 7.7cm3 Page 2Explanation / Answer
11)
Ans: (D) 3400 m3
= 9.5 10^-4
v° = 2.25 10^5 m3
t = 1.3 -17.2 = - 15.9 °
v = * v° * t = 9.5 10^-4 * 2.25 10^5 * -15.9
v =- 339.86 * 10^-4 * 10^5 =- 3400 m3
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