The graph shows a sample of gas when it is hot, cold, and at room temperature.

three graphs are plotted with number of particles on the y axis and energy on the x axis. all three graphs are smooth curves which rise up and then come down. the leftmost curve is the highest and is labeled a. the rightmost curve is labeled c and is the lowest. the curve in the middle is labeled b and has a height less than a and greater than c.

which statement is correct about curves b and c?

b represents hot gas and c represents gas at room temperature.
b represents gas at room temperature and c represents hot gas.
b represents gas at room temperature and c represents cold gas.
b represents cold gas and c represents gas at room temperature.

B represents gas at room temperature and C represents hot gas.

Explanation:

So, A represents the cold gas, because it has the lowest no. of particles that has high energy.

B represents the gas at room T because it has more no. of particles with higher energy.

C represents the hot gas, because it is the curve that has the highest no. of particles with high energy.

B represents gas at room temperature and C represents hot gas.

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