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Answer 1

hiiiiii friend
here is your answer
1. ZnSO4 + H2CO3 ---->ZnCO3 + H2SO4
2.ZnCO3 + HNO3 ---->Zn (NO3)2 + H2CO3
3.Zn (NO3)2 + NaOH ----> Zn (OH)2 + NaNO3
4.Zn (OH)2 + heat ----> ZnO + H2O
5.ZnO + H2SO4 ---->ZnSO4 + H2O

A = H2CO3
B = HNO3
C = NaOH
D = HEAT
E = H2SO4


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Answer 2

Answer:

Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.