(Solved): Ammonium phosphate ((NH4)3PO4) is an important ingredient in many fertilizers. It can be ...

Ammonium phosphate $$\left({\left({\mathrm{NH}}_4\right)}_3{\mathrm{PO}}_4\right)$$ is an important ingredient in many fertilizers. It can be made by reacting phosphoric acid $$\left({\mathrm{H}}_3\mathrm{PO}{}_4\right)$$ with ammonia $$\left({\mathrm{NH}}_3\right)$$. What mass of ammonium phosphate is produced by the reaction of $$8.1\mathrm{g}$$ of phosphoric acid? Be sure your answer has the correct number of significant digits.