The cruise control on a car is an example of what process

13) phosphoric acid + potassium hydroxide

H3PO4 + 3 KOH > K3PO4 + 3H2O

H3PO4 ( acid )

KOH ( base )

K3PO4 ( salt )

Therefore fore K3PO4 is salt ( tripotassium phosfate )

14) Al(ClO4)3

Al⁺³ ClO₄⁻

in chlorine = x + ( - 2 * 4 ) = -1

x - 8 +1 = 0

x = 8 - 1

x = +7

in Al(ClO4)3 chlorine oxidation state + 7

15) CuO(s) + H2 (g)  Cu(s) + H2O (l)

The oxidation state of Cu in CuO  = +2

The oxidation state of H in H2 = 0

The oxidation state of Cu in Cu = 0

The oxidation state of H in H2O = +1

That in the above reaction  , The oxidation state of Cu is decreased from +2 to 0  , so Cu⁺² is reduced , The oxidation state of H  is decreased from 0 to +1 ,  So H2  is oxidized .

Hope that helps!