Answer
$3.48\times10^{3}$ $mols$ $CaO$
Work Step by Step
Convert kilograms into grams. Then use molar mass to convert grams into moles.
$195 kg$ $CaO$$\times\frac{1000 g CaO}{1 kg CaO}$$\times\frac{1 mol CaO}{56.0774 g CaO} =$ $3.48\times10^{3}$ $mols$ $CaO$
