Which is true about H3PO4 and NH3?
A. Both are electrolytes, one is an Arrhenius acid and one is an Arrhenius base
B. Both are electrolytes, only one is an Arrhenius acid or an Arrhenius base
C. Neither are electrolytes, one is an Arrhenius acid and one is an Arrhenius base
D. Neither are electrolytes, neither is an Arrhenius acid or an Arrhenius base

the correct answer is boyle

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

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