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5 cards from this section. Quick, good the night before a test.
What is the atomic mass of oxygen?
Refer to the periodic table for the value.
Define average atomic mass.
Think about isotopes and their natural prevalence.
What unit is used to express atomic mass?
Remember the standard comparison used for atomic mass.
True or False: The average atomic mass of an element accounts for its isotopes.
Think about the definition of average atomic mass.
Given a sample that contains 90% Cl-35 and 10% Cl-37, calculate the average atomic mass of chlorine in this sample.
Use the concept of weighted average involving percentages.
If the molecular mass of a compound is found to be 82 g/mol and its formula is C3H6, calculate the average atomic mass of carbon and hydrogen based on its composition.
Set up an equation using known atomic masses to find an unknown.
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