Answer:
The equations are
1)
2)
Explanation:
There are two ionization steps in the dissociation of hydroselenic acid.
In first dissociation the H₂Se loses one proton and forms hydrogen selenide ion as shown below:
The next step is again removal of a proton from the base formed above.
1.endothermic
2.exothermic
3.exothermic
1) 100s of millions of years ago Trees and plants fall into swamps
2) Layers of rotting plant matter builds up underwater
3) Over millions of years the weight of layers heat the plant matter and turn into Peat
4) Over millions of years more pressure and heat turns Peat into coal
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NH₃+NO=N₂+H₂O;
NH₃+NO=N₂+6H₂O;
NH₃+6NO=N₂+6H₂O;
4NH₃+6NO=N₂+6H₂O;
4NH₃+6NO=5N₂+6H₂O.