Complete the following calculations reporting your answers in the appropriate nu

Question

Complete the following calculations reporting your answers in the appropriate number of significant figures. Show your calculations. No credit will be given for answers only. Round all answers to appropriate number of significant figures. Data: Mass of salt mixture (g) 1.345 Mass of filter paper (g) 0.832 Mass of filter paper + Ba_3(PO_4)_2 (g) 1.225 Limiting reactant Na_3PO_4 middot 12H_2O Excess reactant BaCl_2 middot 2H_2O Calculations: Molar Mass of Na_3PO_4 middot 12H_2O ____________ Molar Mass of BaCl_2 middot 2H_2O Mass of Ba_3 (PO_4)_2 collected (g) ____________ Moles of Ba_3(PO_4)_2 collected ___________

Explanation / Answer

Molar mass of Na3PO4 .12H2O = 380.12 g/mol

Molar mass of BaCl2.2H2O = 244.26 g/mol

Mass of Ba3(PO4)2 collected = ( filter paper + Ba3(PO4)2 ) - filter paper weight = 1.225-0.832 = 0.393 g

Molar mass of Ba3(PO4)2 = 601.93g/ mol

No of moles of Ba3(PO4)2 present = weight/ molecular weight = 0.393/601.93 = 6.53*10-4 moles

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