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Question
Is it possible to have a macroscopic sample of oxygen that has a mass of 14 atomic mass units?A) Yes, but it would need to be made of oxygen atoms that each had less than the normal number of neutrons.
B) No, this is less than than the mass of a single oxygen atom.
C) Yes, but it would have the same density as nitrogen.
D) No, because oxygen is a gas at room temperature.
Answer
This answer is hidden. It contains 1 characters.
Related questions
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Heat energy is measured in units of
A) degrees.
B) joules.
C) calories.
D) both joules and calories.
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When the temperature of a fixed volume of air initially at 0 C is lowered by 1 degree, its pressure
A) decreases by 1/273.
B) decreases by 100/273.
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D) increases by 100/273.
Q:
Which of these is the smallest?
A) 1 Celsius degree
B) 1 kelvin
C) 1 Fahrenheit degree
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B) potential energy.
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Distinguish between the concepts of thermal energy, temperature, and heat.
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A) surface of bodies of water.
B) layer of water slightly below the surface.
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Water at 4C will expand when it is slightly
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C) both of these
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If water at 0C slightly increases in temperature, the water
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If water at 20C slightly increases in temperature, the water
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Q:
A kg of 40C water and a kg of 20C water, after being mixed, have a temperature of 30C. However, the final temperature of a 1-kg iron block at 40C placed into 1 kg of water at 20C is
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A) becomes more ordered.
B) becomes less ordered.
C) reaches equilibrium.
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When work is done by a system and heat is subtracted, the temperature of the system
A) increases.
B) decreases.
C) remains unchanged.
Q:
Which law of thermodynamics addresses the direction of heat flow?
A) First law
B) Second law
C) Third law
D) all of the above
Q:
Which law of thermodynamics states that no system can reach absolute zero?
A) First law
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Q:
At some point between Earth and the Moon, the forces due to gravity on a space traveler would be the same when this point is
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A) less the gravitational force between them.
B) more the gravitational force between them.
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A) one-quarter.
B) half as much.
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If Earth's mass somehow decreased with no change in its radius, your weight would
A) decrease also.
B) increase.
C) remain the same.
Q:
Newton discovered
A) gravity.
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C) neither of these
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B) rise and fall back to Earth's surface.
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E) none of the above