Chemistry, 20.07.2021 20:00 unicornsflyhigh

En un recipiente de 900L se mezcla oxigeno y metano de tal manera que la masa de oxigenio es el doble de la masa del metano. Halla el volumen parcil del metano (CH4) ? Ayuden xfavor es examen gracias los quiero

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Answer from: Quest

The answer is 65.3312

Answer from: Quest

V=s/t 4.5 = 5000+15000+20000+5000t=45000/4.5t=10000sto convert divide by 360answer is 3 hours

Answer from: Quest

option c: 1605.1 kj

the balanced chemical reaction for combustion of methane is as follows:

$ch_{4}+2o_{2}\rightarrow co_{2}+2h_{2}o$

here, enthalpy formation of $ch_{4}, o_{2}, co_{2} and h_{2}o$ is -74.7 kj/mol, 0 kj/mol, -393.5 kj/mol and -241.82 kj/mol respectively.

the heat released or $\delta h_{reaction}$ can be calculated as follow:

$\delta h_{reaction}=\delta h_{f}_{co_{2}}+2(\delta h_{f}_{h_{2}o} h_{f}_{ch_{4}}-2\delta h_{f}_{o_{2}})$

putting the values,

$\delta h_{reaction}=-393.5 kj/mol+(.82 kj/.6-(2)(0 kj/mol))=802.54 kj/mol$

thus, heat released by combustion of 1 mol of methane is 802.54 kj/mol. thus, for 2 mol, heat released will be:

$\delta h_{reaction}=(2 mol)(802.54 kj/mol)=1605.1 kj$

therefore, heat released by the combustion of 2 mol of methane is 1605.1 kj.

Answer from: Quest

balanced chemical equations follow the law of conservation of mass and charges. the masses and charges on either sides of the equation should be balanced.in conservation of mass, the number of atoms of each element on left side should be equal to the number of atoms of each element on the right side of the equation.1)k₂so₄ + 2ca(no₃)₂ --> 2kno₃ + 2caso₄number of ions left side right side k⁺ 2 2so₄²⁻ 1 2ca²⁺ 2 2no₃⁻ 4 2in this equation the masses of so₄²⁻ and no₃ are not balanced. therefore this equation violates the law of conservation of mass2)ti + 2 cl₂ > ticl₄ left side right side ti 1 1cl 4 4this equation follows the law of conservation of mass3)2c₂h₂ + 5o₂ > 4co₂ + 2h₂o left side right side c 4 4h 4 4o 10 10this equation follows the law of conservation of mass4)baso₄ + 2naoh --> ba(oh)₂ + na₂so₄ left side right side ba 1 1so₄²⁻ 1 1na 2 2 oh⁻ 2 2this equation follows the law of conservation of massanswer is 1st equation

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