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lilavasa [31]
2 years ago
11

.

Chemistry
1 answer:
zimovet [89]2 years ago
8 0

Answer:

498 kj/mol

Explanation:

Chemical reactions occur as a result of bond breaking and bond formation.

The bonds in reactants are broken and atoms are rearranged to form new bonds.

During bond breaking energy is absorbed to break the bonds of reactants while bond formation involves the release of energy during the formation of new bonds.

In our case;

In 1 mole of the Oxygen molecule, there is one O=O bond

Energy absorbed to break O=O is 498 kJ/mol

Therefore, the ΔH required to break all the bonds in one mole of Oxygen(O₂) molecules is 498kJ/mol.

Note that, bond breaking is endothermic since energy is absorbed  from the surroundings.

mark brainliest pls

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S + 6 HNO3 --> H2SO4 + 6 NO2 + 2 H2O
lina2011 [118]

Answer:

43.5 moles of HNO₃.

Explanation:

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This can be obtained as illustrated below:

From the balanced equation above,

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Therefore, 43.5 moles of HNO₃ is required to produce 14.5 moles of H₂O.

7 0
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Hope this helps please mark brainlist it would be greatly appreiciated :)

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