you would have to call all of them, so d.
K- 1 x 2 =2
OH- 1 x 2 = 2
Cu- 2
(CIO3)- 6
K- 1 x 2= 2
OH- 2
Cu- 2
(CIO3)- 3 x2=6
2KOH+ Cu(CIO3)2 - 2KCIO3+ Cu(OH)2
I think this should be under math. So let's say that you have tons of data and you need to sort it. A chart will help to graph that data in an organized formation.
C. Entertaining radio shows that families listened to in the evening. He did these chats to inform the public on what he was going to do about the problems facing the public.