Which of the following is true of Earth's interior?
A) It has a nonmetallic core.
B) It has a low-density crust.
C) It is geologically inactive.
D) It is completely solid.
B
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A storeroom has a volume of 30 m3 and is filled with air of an average molecular mass of 29 u. What is the mass of the air in the room at a pressure of 1.0 atm and temperature of 22°C? R = 0.082 L • atm/mol • K
a. 36 kg c. 72 kg b. 1240 kg d. 700 kg
For the following reaction, identify whether the compound in bold is behaving as an acid or a base
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__________is a graph of orbital velocity versus radius in the disk of a galaxy
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