Which of these elements has an average atomic mass of 55.85 amu?

Co
Fe
Mn
Ni

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Iron (Fe) has an average atomic mass of approximately 55.85 amu.

17 / 20 (85%)

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❓ A __________ shows the identity of the reactants and products and the relative amounts of these substances consumed o...
❓ Which of the following is found on the left side of the reaction symbol in a chemical equation?
❓ What is the correct chemical name of the compound NiCO₃?
❓ This is equal to the sum of all the stable isotopes multiplied by their percent abundance.
❓ The chemical name of NaBr is __________.

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