Ron filings are placed on a scale. as the filings rust, the scale measures an increasing mass. how does the law of conservation of mass apply to these results? a. the law does not apply because a physical change occurred. b. the law applies because the volume of the iron was conserved. c. the law applies, but all reactants and products must be accounted for. d. the law does not apply because a chemical change occurred.

C. The law applies, but all reactants and products must be accounted for.

Explanation:

The law of conservation of the matter is a law in physics that states that whem a reaction takes place you can not create more matter than the matter that already exists, so in this case the mass is increasing because it is recting with the oxygen in the environment so that´s why the mass is increasing, in this case the law applies but you have to take into account all the reactants which should include the oxygen in the environment.

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