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

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

Explanation:

1 mole of 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

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

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

1 mole of 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 =

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.