PLEASE HELPPP
number 14, 15, 16 thanks
...
![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)
Chemistry, 22.06.2019 07:30
According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 13:30
What produces wave a)sound b) heats c)transfer of energy d)vibrations
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 19:00
Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 21:20
One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)
Mathematics, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 13.10.2019 00:50
![question](/tpl/images/cats/biologiya.png)
Biology, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 13.10.2019 00:50
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)
Mathematics, 13.10.2019 00:50
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 13.10.2019 00:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 13.10.2019 00:50
![question](/tpl/images/cats/mat.png)