How can you tell if an element has been reduced? O A. The number of its electrons has not changed in the reaction.
B. It has more electrons in the product than in the reactant.
O C. It has fewer electrons in the product than in the reactant
D. It has a positive oxidation state in the product.

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

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

c) should be the answer.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: