What is the result of a neutralization reaction between nitric acid (HNO3) and potassium hydroxide (KOH)? O A. potassium nitrate (KNO3)
O B.
water and potassium nitride (H20 and K3N)
OC. potassium nitride (K3N)
O
D.
water and potassium nitrate (H20 and KNO3)

D

acid+base> salt + water

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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stan bts

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.