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	<title>Professores Online &#187; jossano</title>
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		<title>Questão de termoquímica sobre variação da entalpia</title>
		<link>http://www.professoronline.net/questao-de-termoquimica-sobre-variacao-da-entalpia/</link>
		<comments>http://www.professoronline.net/questao-de-termoquimica-sobre-variacao-da-entalpia/#comments</comments>
		<pubDate>Tue, 16 Dec 2014 16:37:58 +0000</pubDate>
		<dc:creator><![CDATA[jossano]]></dc:creator>
				<category><![CDATA[Química]]></category>
		<category><![CDATA[da]]></category>
		<category><![CDATA[de]]></category>
		<category><![CDATA[entalpia]]></category>
		<category><![CDATA[questão]]></category>
		<category><![CDATA[sobre]]></category>
		<category><![CDATA[termoquÍmica]]></category>
		<category><![CDATA[variação]]></category>

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		<description><![CDATA[CH4(g)+2O2(g) ? CO2(g)+2H2O(g) com base na tabela, a variação de entalpia da reação INVERSA é ligação energia da ligação C-H 413 C=O 744 O=O 498 O-H 462 a)-688 b)+688 c)+5984 d)-5984 d)-256]]></description>
				<content:encoded><![CDATA[<p>CH4(g)+2O2(g) ? CO2(g)+2H2O(g)</p>
<p>com base na tabela, a variação de entalpia da reação INVERSA é</p>
<p>ligação                energia da ligação<br />
C-H                       413<br />
C=O                       744<br />
O=O                       498<br />
O-H                       462 </p>
<p>a)-688<br />
b)+688<br />
c)+5984<br />
d)-5984<br />
d)-256</p>
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