PLease Answer all parts of the following: a) The recommended daily allowance of calcium for men...

PLease Answer all parts of the following:

a) The recommended daily allowance of calcium for men between the ages of 19 to 50 is 1 000 mg Ca. Three multivitamin tablets are analyzed for calcium gravimetrically with the precipitation of calcium cation by oxalate anion. If the mass dry calcium oxalate obtained is 2.0136 g, how many tablets must a man take in a given day to meet the recommended daily allowance? Ca²⁺(aq) + C₂O₄²⁻(aq) ==> CaC₂O₄ (s)

b) Aqueous lead precipitates when mixed with aqueous carbonate.

Pb²⁺(aq) + CO₃²⁻(aq) ==> PbCO₃(s)

If 5.000 g Pb(NO₃)₂and 2.500 g Na₂CO₃are mixed in water, which ion is the limiting reactant? What mass PbCO₃is precipitated? (PbCO₃= 267.21 g/mol, Pb(NO₃)₂= 331.2 g/mol, Na₂CO₃= 105.9888 g/mol)

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Expert Solution

queen_honey_blossom answered 11 months ago

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