A balloon containing 2.0 m3 of hydrogen gas rises from a location at which the temperature is 22°C and the pressure is 101 kPa to a location where the temperature is -39°C and the pressure is 20 kPa
If the balloon is free to expand so that the pressure of the gas inside is equal to the ambient pressure, what is the new volume of the balloon? A) 4.0 m3
B) 6.0 m3
C) 8.0 m3
D) 10 m3
E) 12 m3
C
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The half-life of a radioactive element is the time it takes for:
A) half of the radioactive atoms to double themselves. B) half of the radioactive atoms to decay into isotopes. C) the radioactive atoms to increase by half of its initial quantity. D) the radioactive atoms to increase to 1.5 times of its initial quantity.
What is responsible for much of the erosion of Earth's surface?
a. lava flows b. solar wind c. impact craters d. convection e. water
Consider a student whose mass is 70 kg. If all his mass were converted to electrical energy, for how many years could he keep a 100-W light bulb burning?
(c = 3.0 × 108 m/s)
What is the temperature of 3.00 moles of an ideal gas at a pressure of 250 kPa held in a volume of 25.0 L?
A) 509 K B) 90.5 K C) 752 K D) 272 K E) 251 K