Refer to the image shown to answer the question. If a light ray is reflected off the shiny surface at 170 degrees, at what angle did the light ray first strike the surface?
Incident rays are shown at 10, 30, 50, and 70 degrees. The line at 90 degrees is labeled normal. Reflected rays are shown at 110, 130, 150 and 170 degrees.

70 degrees

170 degrees

10 degrees

110 degrees

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