How many moles of oxygen atoms are present in 5.20 mol of Al2(SO4 ) 3?
A) 15.6
B) 20.8
C) 62.4
D) 3.76 x 10^25
C
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Every day, tremendous amounts of the sun's energy strike Earth. Why doesn't Earth overheat?
a) The energy mostly is absorbed in various weather systems. b) Most of the energy is used in photosynthesis to help plants grow and survive. c) The energy is ultimately radiated back to space. d) Much of the heat melts rocks, forming lava deep inside of Earth.
The approach to the manufacture and use of DDT worldwide is best described as ________
A) ecocentric B) anthropocentric C) focusing on economic externalities D) focusing on deep ecological principles E) biocentric
Dams and other water projects result in the redistribution of water over both space and time
Indicate whether the statement is true or false
Which of the following was not among the early scientific attempts to determine Earth's age?
a. the cooling rate of a molten iron sphere of Earth's diameter b. the rate of sediment deposition c. the rate at which water precipitation accumulated in the ocean d. the geologic principles and the inferred rates of change necessary to explain the fossil record e. the rate of salt accumulation in the ocean