Quiz: Calculating Ar from isotopic abundances
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Welcome! You've already learned about atoms, subatomic particles, and isotopes. Now, let's test your understanding of calculating relative atomic mass (Ar) using isotopic abundances.
What is the definition of relative atomic mass (Ar)?
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Calculate the relative atomic mass (Ar) of chlorine if 75% of its atoms are chlorine-35 and 25% are chlorine-37.
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Which of the following are true about isotopes? (Select all that apply)
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When calculating Ar, the {{blank0}} of each isotope is multiplied by its {{blank1}}.
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Which of the following represents the correct formula for calculating relative atomic mass (Ar)?
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Match the items on the left with their correct pairs on the right
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Magnesium has 80% magnesium-24 and 20% magnesium-26. What is its relative atomic mass (Ar)?
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Match the items on the left with their correct pairs on the right
What is the relative atomic mass of an element with two isotopes: 90% with mass 10 and 10% with mass 11?
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Which statements about isotopic abundance and relative atomic mass are correct? (Select all that apply)
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