Calculate the formula unit mass of K2CO3.
FormulaunitmassofK2CO3=2×AtomicmassofK+AtomicmassofC+3×AtomicmassofO=2×39u+12u+3×16u=78u+12u+48u=138uTherefore,theformulaunitofK2CO3is138g.
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Calculate the formula unit mass of K2CO3