If a 300.0 ml sample of a gas is heated at constant pressure from 25.0ºc to 55.0ºc, its new volume is ml?

 The new  volume is    330.2 ml

calculation

 The new  volume is  calculated using  the Charles  law formula

that is  V1/T1= V2/T2

where T1= 25.0  c  into kelvin  =  25 +273  = 298 K

         V1=  300.0 ml

       T2  = 55.0  c  into kelvin = 273   +55  =328  K

      V2 =  ? ml

make V2  the   subject of the formula  by  multiplying  both side by T2

V2= V1T2/ T1

V2 =[ (300.0 ml x 328 k)  / 298 k}  = 330.2 ml

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

answeridentity;