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Chemistry, 11.03.2021 17:00 wolfsilvereye10
Em relação às notações 2 O3 e 3 O2 temos os seguintes comentários: I. Na notação 2 O3, o número 2 chama-se coeficiente e indica quantidade de moléculas. II. Na notação 3 O2, o número 2 é um índice e indica o número de átomos do elemento químico na fórmula. III. As duas notações indicam, no total, diferentes quantidades de átomos. IV. As duas notações representam substâncias simples formadas pelo mesmo elemento químico. Estão corretos somente os comentários: A I; II e III. B I e II. C II e IV. D I; II e IV. E II; III e IV.
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Em relação às notações 2 O3 e 3 O2 temos os seguintes comentários: I. Na notação 2 O3, o número 2 ch...
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