Most organic compounds are made up of ________
A) carbon, hydrogen, and nitrogen atoms
B) carbon, nitrogen, and water atoms
C) carbon, nitrogen, and ozone atoms
D) carbon, hydrogen, and oxygen atoms
E) nitrogen, oxygen, and carbon dioxide atoms
D
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The mineral gold (Au) is very soft. Gold's softness can be attributed to
A) large, tightly packed atoms. B) small, loosely bonded atoms. C) large, loosely packed, and loosely bonded atoms. D) large, closely packed, and strong bonded atoms.
The Earth’s age is thought by most geologists to be _________. Fill in the blank(s) with the appropriate word(s)
Explain why oxygen-breathing equipment would be needed in mesospheric air even though it contains the same composition of gases that is found at the earth's surface
In a solution of a solid in a liquid, the liquid is called which of the following?
A) concentrate B) dissolver C) solute D) solvent