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Gala2k [10]
3 years ago
11

Calculate the approximate enthalpy change, δhrxn, for the combustion of one mole of methane a shown in the balanced chemical equ

ation: ch4+2o2→2h2o+co2 use the values you calculated in parts a, b, c, and d, keeping in mind the stoichiometric coefficients
Chemistry
1 answer:
Elena L [17]3 years ago
4 0
To solve for the enthalpy of reaction, we apply the Hess's Law.

ΔHrxn = ∑(ν×Hf of products) - ∑(ν×Hf of reactants)
where
v is the stoichiometric coefficient determined from the balanced reaction
Hf is the standard heat of formation; these are empirical values:
*For CH₄: Hf = <span>−74.87 kJ/mol
*For O</span>₂: Hf = 0
*For CO₂: <span>-393.5 kJ/mol 
*For H</span>₂O: <span>-241.82 kJ/mol

</span>ΔHrxn = [(2*-241.82 kJ/mol)+(1*-393.5 kJ/mol)] - [(1*−74.87 kJ/mol)+(2*0 kJ/mol)] =<em> -802.27 kJ/mol</em>
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Answer:

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What is the mass of 2M H2SO4 in a 50ml of solution ​
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8 0
2 years ago
Please do this please please it depends on my grades
solong [7]

Answer:

I think it's

Explanation:

It's A and C

I guess...

Sry if I'm wrong

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