The activation energy for the gas phase isomerization of dimethyl citraconate is 105 kJ. cis-(CH3OOC)(CH3)C=CHCOOCH3trans-(C H3OOC)(CH3)C=CHCOOCH3
The rate constant at 641 K is 2.77×10-4 /s. The rate constant will be
/s at 682 K.

your answer would be a. 12.5 kg

1.solid

2.carbon dioxide

3.helium

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

that tool would be a compass