Vanadium(V) oxide, V2O5\text{V}_2\text{O}_5V2O5, is reduced to vanadium metal by heating with calcium. What is the minimum mass of Ca\text{Ca}Ca required to reduce 45.45 g45.45\text{ g}45.45 g of vanadium(V) oxide?
(Use the relative atomic masses: V=50.9\text{V} = 50.9V=50.9, Ca=40.1\text{Ca} = 40.1Ca=40.1, O=16.0\text{O} = 16.0O=16.0)
