Why do you fill a basketball, a football, a soccer ball, or a volleyball with a gas (air) instead of a liquid? choose the two statements that apply.
a. a liquid would be too messy.
b. a liquid would make the ball too heavy.
c. gases can be forced into a smaller volume than a liquid can.
d. a liquid would make the ball bounce too much.
e. gases occupy less space than liquids, which makes the ball bounce.

  the volume of  0.220 m k2s    solution  required  to  completely  react with 175 ml  of 0.115m co(no3)2  calculate the moles  of co(no3)2 =  molarity x volume/1000175 x0.115/1000= 0.02  moleswrite  the reacting  equationk2s(aq)  +  co(no3)2  = 2 kno3(aq)  + cos(s)by  use  of mole ratio between k2s to co(no3)2 which  is  1: 1 the moles of k2s is therefore = 175  x0.115/1000= 0.02  molesvolume = moles/molarity=0.02/0.22=0.09  ml  of k2s