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ULU 10. State whether the representative particle in each of the fol- lowing substances is an atom, a formula unit, or a mole
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Answer #1

a) acetone , C3H6O : molecule

b) Cobalt , Co : atom

c) magnetite , Fe2O3 : Formula unit

d) phosphorus , P4 : Formula unit

If formula unit is representative particle , it can not be seperated into individual representative particle because it is just whole number ratio of elements.

If atom or molecule is representative particle, it can be seperated into individual representative particles.

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