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How many moles of oxygen atoms are contained in the following?

A) 3.31 mil KMnO4
B)43.4 mol CO2
C)2.45e-2 mol CuSO4•5 H2O

1 Answer

4 votes

Answer:

For A: The moles of oxygen atoms are 13.24 moles

For B: The moles of oxygen atoms are 86.8 moles

For C: The moles of oxygen atoms are 0.2205 moles

Step-by-step explanation:

  • For A: 3.31 moles
    KMnO_4

1 mole of
KMnO_4 contains 1 mole of potassium atoms, 1 mole of manganese atoms and 4 moles of oxygen atoms

So, moles of oxygen atoms = (3.31 × 4) = 13.24 moles

  • For B: 43.4 moles
    CO_2

1 mole of
CO_2 contains 1 mole of carbon atoms and 2 moles of oxygen atoms

So, moles of oxygen atoms = (43.4 × 2) = 86.8 moles

  • For C:
    2.45* 10^(-2) moles
    CuSO_4.5H_2O

1 mole of
CuSO_4.5H_2O contains 1 mole of copper atoms, 1 mole of sulfur atoms, 10 moles of hydrogen atoms and 9 moles of oxygen atoms

So, moles of oxygen atoms =
(2.45* 10^(-2)* 9)=0.2205moles

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