Chromium has an atomic mass of 51. 9961μ and consists of four isotopes, Cr50, Cr52, Cr53, and Cr54. The Cr52 isotope has a natural abundance of 83. 79% and an atomic mass of 51. 9405μ. The Cr54 isotope has a natural abundance of 2. 37% and an atomic mass of 53. 9389μ. The natural abundances of the Cr50 and Cr53 isotopes exist in a ratio of 0. 4579:1, and the Cr50 isotope has an atomic mass of 49. 9460μ. Required:
Determine the atomic mass of the Cr53 isotope.

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

1 is the answer to this problem

bcde is the incorrect answer it is a

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