Ammonium phosphate is an important ingredient in many fertilizers. it can be made by reacting phosphoric acid with ammonia .

what mass of ammonium phosphate is produced by the reaction of of ammonia?

be sure your answer has the correct number of significant digits.

There's missing information on the mass of the ammonia. As an example, let's use it at 4.5 g. The calculus will be the same, just substitute the mass for the one given in the question.

13.15 g

Explanation:

The reaction is given by the equation:

H₃PO₄ + 3NH₃ → (NH₄)₃PO₄

The molar mass of ammonia is 17 g/mol, and the molar mass of ammonium phosphate is 149 g/mol. The stoichiometry of the reaction is:

3 moles of NH₃ 1 mol of (NH₄)₃PO₄

3*17 = 51 g of NH₃   1*149 = 149 g of (NH₄)₃PO₄

          4.5 of NH₃    x

Here, 4.5 g must be substituted by the mass given in the question.

Then, by a simple direct three rule:

51x = 149*4.5

51x = 670.5

x = 13.15 g

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml

a is the correct answer