4. A glass flask at a temperature of 10 0C is completely filled with mercury at the same temperature. When the flask and mercury are warmed together to a temperature of 50.0 0C, a volume of 4.0 cm3 of mercury overflows the flask. If the coefficient of volume expansion of mercury and glass are βHg = 1.80×10−4 /K and βglass = 2.70×10−5 /K , respectively, what is volume of Mercury at 400?

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