00 kg. We know that 1 mole of CuFeS$_{2}$ has a mass of 183.52 g (from the molar mass of CuFeS$_{2}$). Therefore, the number of moles in 1.00 kg (or 1000 g) is given by:
\[ \text{moles of CuFeS}_{2} = \frac{1000}{183.52} = 5.45 \text{ moles} \]
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