An excited atom is an atom
A) with excess vibration.
B) with one or more displaced electrons.
C) with more protons than electrons.
D) that is frantic.
Answer: B
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When solving conservation of energy problems
A. Work on the system is added to the initial energy side B. The change of thermal energy is zero if there is no friction or drag C. Work is zero if the system is isolated D. All of these are correct
Momentum is defined as ________
A) mass times acceleration B) mass times speed C) force times velocity D) mass times velocity
A 50-gram sample of dry ice (solid CO2) is placed in a 4-liter container. The system is sealed and allowed to reach room temperature (20°C). By approximately how much does the pressure inside the container increase when the dry ice turns to gas? (Ignore the initial volume of the sample.)
What will be an ideal response?
What property do greenhouse gases have that allow them to warm a planet?
What will be an ideal response?