Luis dice a Eduardo que cuando la leña se quema, solo quedan las cenizas y que, por tanto, no hay conservación de la masa. ¿que le contestaría Eduardo, que es un experto en reacciones químicas?
a)Que se tendría que tener en cuenta la masa de oxigeno que ha reaccionado y la de dióxido de carbono y vapor de agua que se ha formado, para poder comprobar que la masa se conserva.
b) que en las reacciones quimicas la masa se conserva, pero en las combustiones siempre disminuye.
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Luis dice a Eduardo que cuando la leña se quema, solo quedan las cenizas y que, por tanto, no hay co...
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