What is one atomic mass unit?
a. The mass of a hydrogen atom at the Earth's surface.
b. The mass of an oxygen atom in outer space.
c. The mass of a carbon atom.
d. One-twelfth of a carbon atom.
e. One-twentieth the mass of a uranium atom.
Question 2
What was Avogadro's hypothesis?
a. That under all conditions each liter of any gas contains the same number of molecules.
b. That under identical conditions each liter of all gases contains the same number of molecules.
c. That under ideal conditions each liter of all gases contains the same number of atoms.
d. That under identical conditions each liter of a particular gas contains the same number of molecules.
e. That under identical conditions each liter of all gases contains the same number of atoms.
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Surface Maps
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Formation of the Early Earth
Humans are related to Earth’s other organisms