An ideal gas is compressed isothermally to one-third of its initial volume. The resulting pressure will be
A) three times as large as the initial value.
B) less than three times as large as the initial value.
C) more than three times as large as the initial value.
D) equal to the initial value.
E) impossible to predict on the basis of this data.
A
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A glass tea kettle containing 500 g of water is on top of the stove. The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m2 and is 1.5 mm thick
At a certain moment, the temperature of the water is 75°C, and it is rising at the rate of 3 C° per minute. What is the temperature of the outside surface of the bottom of the tea kettle? The thermal conductivity of glass is 0.840 W/(m•K). Neglect the heat capacity of the kettle. A) 39°C B) 92°C C) 120°C D) 86°C E) 77°C
In the Sun, rising currents of hot gas below the photosphere cause granulation
a. True b. False Indicate whether the statement is true or false
If you stand on a weighing scale and suddenly the atmosphere vanishes, taking buoyancy into account, the scale reading
A) increases. B) decreases. C) remains the same. D) quickly reduces to zero.
Suppose you had molecular oxygen (O2) chilled enough so that it was in liquid form. Which of the following best describes the phase changes that would occur as you heated the liquid oxygen to high temperature?
A) It would vaporize (evaporate) into a gas, then the molecules would dissociate into individual oxygen atoms, then the atoms would become increasingly ionized as you continued to raise the temperature. B) The liquid molecules would quickly dissociate into a liquid of individual oxygen atoms. These atoms would then vaporize (evaporate) into a gas, and then become ionized to make a plasma. C) It would vaporize (evaporate) into a gas, then the molecules would lose electrons until no electrons were left, then the molecules would dissociate into individual oxygen nuclei. D) The liquid oxygen first would solidify. The solid would then vaporize (sublimate) into a gas, which would then become a plasma as the molecules lost their electrons, until finally it consisted of bonded pairs of oxygen nuclei stripped bare of any electrons.