How many protons are in the nuclues of an atom of beryllium?
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Answer:
Explanation:
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In this case, since we have 245 of iron (III) oxide, we first need to compute the moles contained there:
Now, as 1 mole of iron (III) oxide is related to 2 moles of iron, due to iron's subscript in the molecule, we get the moles of iron itself:
And the mass is computed based on the atomic mass of iron:
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