If you reacted 93.7 grams of iron with excess copper sulfate solution, what mass of copper would you expect to make? you may nee

Question

1 year ago

5

d to balance the equation first. fe cuso4 -> cu feso4

1 answer:

Mariana [72] · Answer 1 · 2023-07-08T22:25:14+03:00

Answer is although the question should have 3 significant figures.

<h3>What is significant figures?</h3>

Fe + CuSO4 --> Cu + FeSO4

It is already balanced

1 mol Fe : 1 mol CuSO4 : 1 mol Cu : 1 mol FeSO4

Fe: 55.8 g/mol

Cu: 63.5 g/mol

number of moles = mass in grams / atomic mass = 93.7 g / 55.8 g/mol = 1.679 mol

1 mol Fe / 1 mol Cu => 1.679 mol Fe / 1.679 mole Cu

mass = atomic mass * number of atoms = 63.5 g/mol * 1.679 moles = 106.6 g = 107 rounded to 3 significant figures.

To learn more about significant figures, refer to:

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