Increased temperature usually leads to an increase in reaction rate because collisions are
a. more violent only.
b. more frequent only.
c. both more violent and more frequent.
d. none of these
c
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_________corrosion is the dissolution of a metal that occurs when it is electrically connected to a more noble metal in an electrolyte.
Fill in the blank(s) with the appropriate word(s).
If a star has an extrasolar planet, the wavelength of its radial velocity curve is related to the planet's
A) orbital shape B) radius C) mass D) orbital period
Clusters of galaxy clusters are known as _____
A) megaclusters B) hyperclusters C) monoclusters D) superclusters
Small openings between leaves in a tree act as pinholes. The round spots of light cast on the ground below are images of
A) the Sun. B) the openings themselves. C) both of these D) neither of these