(Vunesp) Duas amostras de carbono puro de massas 1,00 g e 9,00 g foram completamente queimadas
(Vunesp) Duas amostras de carbono puro de massas 1,00 g e 9,00 g foram completamente queimadas ao ar. O único produto formado nos dois casos, o dióxido de carbono gasoso, foi totalmente recolhido, e as massas obtidas foram 3,66 g e 32,94 g, respectivamente. Utilizando esses dados: a) demonstre que nos dois casos a Lei de Proust é obedecida; b) determine a composição de dióxido de carbono, expressa em porcentagem em massa de carbono e de oxigênio.

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