The respiratory system is responsible for taking in oxygen and releasing carbon dioxide. When a person walks, he or she breathes at a fairly slow rate. However, when he or she starts running, the oxygen reguirement of the body increases, and the body is
signaled to increase the rate at which the person breathes, Which body system interacts with the respiratory system to signal that the
body's oxygen reguirement has changed?

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

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

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante