richtercatrina16
08.01.2021 •
Chemistry
What are two types of matter are pure substances
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Ответ:
Elements and compounds are two types of pure substances.
Explanation:
Ответ:
água, amônia, gás carbônico
Explanation:H2O-> porque são dois átomos de hidrogênio e um de oxigênio; NH4-> poque é um átomo de nitrogênio e quatro átomos de hidrogênio e CO2->porque é um átomo de carbono e dois átomos de oxigênio