One mole of 27 13Al has a mass of _______ g.
A. 13
B. 27
C. 14
D. 20
E. 40
B. 27
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There must be equal amounts of mass on both side of the center of mass of an object
A) True B) False
The metric prefix that means one thousand is milli-
a. True b. False Indicate whether the statement is true or false
Match the words at the left to the correct blanks in the sentences at right. Use each choice only once.
A. Spacecraft images show fountains of ice spraying into space from Saturn's moon _________ B. Jupiter has three moons for which there is evidence of a global, subsurface ocean of liquid water, with the strongest evidence favoring an ocean on _________ C. ______ is the most volcanically active world in the solar system. D. Scientists have detected lakes of liquid methane and ethane on the surface of __________ E. The two moons that are larger than the planet Mercury are Titan and __________, which is also the largest of Jupiter's moons (and largest moon in the solar system).
Among the modes of energy transfer in stars, _____ is the least efficient of all
A) conduction B) convection C) radiation D) evaporation