A certain chemical reaction occurs and the temperature of the products are warmer than the reactants. Based on this, which is true? Select all that apply. A: The enthalpy is negative. B: this reaction is endothermic. C: The average kinetic energy of the product particles is higher than that of the reactant particles. D: The KdH is negative. E: The average speed of the product particles is faster than that of the reactant particles. F: The potential energy of the products is higher than that of the reactants.

B, C, E

Explanation:

A certain chemical reaction occurs and the temperature of the products are warmer than the reactants. Based on this, which is true? Select all that apply.

A: The enthalpy is negative.

B: this reaction is endothermic.

C: The average kinetic energy of the product particles is higher than that of the reactant particles.

D: The KdH is negative.

E: The average speed of the product particles is faster than that of the reactant particles.

F: The potential energy of the products is higher than that of the reactants.

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