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hellensilvacosta
@hellensilvacosta
February 2021
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Quantas substâncias simples existem entre as substâncias de formula O3,H2O2,P4,I2,C2H4, e He?
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hellensilvacosta
February 2021 | 0 Respostas
Qual alternativa tem apenas substancias simples? a)Fe,O3,H2O2 b) CO, NaOH e NaC1 c) He, H2 e CO. d) O2, N2 e Ag. e) H2O2, H2O e NH3.
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