![subject](/tpl/images/cats/himiya.png)
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.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 05:30
The table describes how some substances were formed substance 19 description formed by boiling pure water formed by combining three hydrogen atoms to every nitrogen atom formed by adding 5 g of sugar to 1 l of water formed by compressing carbon under high pressure based on the given descriptions, which substance is most likely a mixture?
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 06:00
Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 11:40
Enzymes affect the reactions in living cells by changing the
Answers: 3
You know the right answer?
Em relação às notações 2 O3 e 3 O2 temos os seguintes comentários: I. Na notação 2 O3, o número 2 ch...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/es.png)
Spanish, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/istoriya.png)
History, 13.09.2020 23:01
![question](/tpl/images/cats/istoriya.png)
History, 13.09.2020 23:01
![question](/tpl/images/cats/himiya.png)
Chemistry, 13.09.2020 23:01
![question](/tpl/images/cats/en.png)
English, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01
![question](/tpl/images/cats/mat.png)
Mathematics, 13.09.2020 23:01