The compound nickel (iii) chloride dihydrate has mole(s) of water for every mole(s) of ionic compound.

three, two

two, three

one, two

two, one

The compound nickel (III) chloride dihydrate has two moles of water for every one mole of ionic compound.
In each mole of ionic compound, there are two moles of water in this compound. 

Your pictures are upside down

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post