What do we mean by the star-gas-star cycle?
A) It is the idea that stars in close binary systems can exchange gas with one another.
B) It is the set of nuclear reactions by which heavy elements are produced in the cores of massive stars.
C) It describes the orbits of the stars and interstellar medium around the center of the galaxy.
D) It is the continuous recycling of gas in the galactic disk between stars and the interstellar medium.
D
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Because more massive stars have more gravitational energy, they can fuse heavier nuclear fuels
a. True b. False Indicate whether the statement is true or false
If you move an electron from a lower energy level to a higher energy level, you can call the atom a(n) _____
A) excited atom B) neutral atom C) disassociated atom D) grounded atom
What are the major reasons that the energy use rate has decreased over the last quarter century as compared to the preceding quarter century?
What will be an ideal response?
What property primarily determines the effect of temperature on the solubility of gas molecules?
A) the kinetic energy of the gas B) the polarity of the gas C) the molecular weight of the gas D) the ionic strength of the gas E) the dipole strength of the solvent