Carbon-12 is the most common isotope of carbon and has a mass number of 12. However

the average atomic mass of carbon found on a periodic table is slightly more than 12 Daltons.

Explanation:

Isotope refers to each of two or more forms of the same element that contains the same number of protons but a different number of neutrons. Isotopes differ with respect to relative atomic mass.

Carbon is a non-metal having atomic number 6 and has two main forms diamond and graphite. It also occurs in impure forms charcoal, soot, and coal.

Carbon-12, Carbon-13, Carbon-14 are naturally occurring isotopes of carbon.

Among these, Carbon-12 is the most common isotope of carbon such that it has a mass number of 12. However, the average atomic mass of carbon found on a periodic table is slightly more than 12 Daltons.

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

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