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nlexa [21]
3 years ago
10

How does the electron-cloud model describe electrons?

Chemistry
1 answer:
Natali5045456 [20]3 years ago
8 0

Answer: C) An electron has a high probability of being in certain regions.

Explanation: How does the electron-cloud model describe electrons? An electron has a high probability of being in certain regions.

***If you found my answer helpful, please give me the brainliest, please give a nice rating, and the thanks ( heart icon :) ***

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Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this
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Answer:  d) -705.55 kJ

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Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

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Reversing the reaction, changes the sign of \Delta H

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\Delta H=-1411.1kJ

On multiplying the reaction by \frac{1}{2} , enthalpy gets half:

0.5C_2H_4(g)+1.5O_2(g)\rightarrow CO_2(g)+H_2O(l)\Delta H=\frac{1}{2}\times -1411.1kJ=-705.55kJ/mol

Thus the enthalpy change for the given reaction is -705.55kJ

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