Compute the volume
Calculate the volume (in mL) of a 1.22 M Na2S solution needed to react with 2.75 g of AlBr3 (molar mass = 266.7 g/mol) in the following reaction:
3Na2S(aq) + 2AlBr3(aq) → Al2S3(s) + 6NaBr(aq)
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