Impingement filters select one: a. are most effective at holding large particles on the fibres. o b. use the process of inertial impaction to remove particles o c. increase in effectiveness over time. o d. remove particles that are too large to pass through the gaps in the filter fibres. the rate of filtration is select one: o a. modified by boundary layer effects. b. increased with increasing viscosity of the fluid being filtered. c. decreased with increasing viscosity of the fluid being filtered. o d. independent of the viscosity of the fluid being filtered.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

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