How many cm are in 3.20 km? (remember the "E" stands for x10 and the number that comes after the "E" is the exponent) * 3.20 cm
3.20 E 2 cm
3.20 E 3 cm
3.20 E 4 cm
3.20 E 5 cm

3.20 E 5 cm

Explanation:

3.20 km=3.20 ×100000 cm =320000cm =3.20 E 5 cm

Hope, this helps you.

c is the answer because when something is left after something evaporates that shows the chemical change.

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