An ideal gas at a temperature of 39
has a pressure of 2.00 atmospheres and a volume of 2.10 liters. What is the temperature if the pressure is halved and the volume is tripled?
A. 155
B. 175
C. 188
D. 195
E. 204
D. 195
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Most of the atoms in the universe are thought to be
A) hydrogen. B) helium. C) about equal amounts of hydrogen and helium. D) iron. E) elements unknown at present.
Uranus is one of a group of dwarf planets and other small objects that have been discovered circling the Sun beyond Neptune
a. True b. False Indicate whether the statement is true or false
Which of the following statements is true?
A. Low-mass stars cannot produce neon. B. Low-mass stars can fuse heavier elements by the triple-alpha process and neutron capture. C. Planetary nebulae are an important source of interstellar carbon and nitrogen. D. All of these choices are correct.
Uranus and Neptune are very similar in size and mass
Indicate whether the statement is true or false