An excess of sodium sulfate solution is added to $$\(50 \mathrm{~cm}^{3}\)$$ of a $$\(0.100 \mathrm{~mol} \mathrm{dm}^{-3}\)$$ solution of barium chloride. What is the mass of barium sulfate formed? [ $$\(M_{\mathrm{r}}\)$$ value: $$\(\left.\quad \mathrm{BaSO}_{4}=233.4\right]\)$$

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