Refer to the activity series chart and determine which of the following displacement reactions can occur.

a. 2ag(s) + zn(no3)2(aq) → 2agno3(aq) + zn(s)

b. 2cu(no3)2(aq) + 2ag(s) → 2agno3(aq) + cu(s)

c. cuso4(aq) + fe(s) → feso4(aq) + cu(s)

d. 3mgso4(aq) + 2al(s) → al2(so4)3(aq) + 3mg(s)

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

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