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viktelen [127]
3 years ago
5

Water plays a key role in chemical weathering by

Chemistry
2 answers:
tino4ka555 [31]3 years ago
8 0
The best answer for this question would be D) All of the above.
11Alexandr11 [23.1K]3 years ago
5 0
The answer would be D, all the above
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Perform the following calculations and give your answer with the correct number of significant figures:
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I think this is the answer try it 

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The charge of the stable ion of S and Li?
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Answer:

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kozerog [31]

The enthalpy change : -196.2 kJ/mol

<h3>Further explanation  </h3>

The change in enthalpy in the formation of 1 mole of the elements is called enthalpy of formation  

The enthalpy of formation measured in standard conditions (25 ° C, 1 atm) is called the standard enthalpy of formation (ΔHf °)  

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)  

The value of ° H ° can be calculated from the change in enthalpy of standard formation:  

∆H ° rxn = ∑n ∆Hf ° (product) - ∑n ∆Hf ° (reactants)  

Reaction

2 H₂O₂(l)-→ 2 H₂O(l) + O₂(g)

∆H ° rxn = 2. ∆Hf ° H₂O - 2. ∆Hf °H₂O₂

\tt \Delta H_{rxn}=2.(-285.8)-2.(-187.8)\\\\\Delta H_{rxn}=-571.6+375.4=-196.2~kJ/mol\rightarrow \Delta Hf~O_2=0

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3 years ago
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1.1 L of nitrogen dioxide were produced in the reaction seen below. How
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