![subject](/tpl/images/cats/himiya.png)
![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 12:10
If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:30
The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 17:30
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 22:30
What is the value of the standard enthalpy of formation of an element in its most stable form?
Answers: 3
You know the right answer?
An acid is a substance that produces hydrogen ions in a water solution true or false...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/ekonomika.png)
Business, 17.08.2021 23:30
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 17.08.2021 23:30
![question](/tpl/images/cats/en.png)
English, 17.08.2021 23:30
![question](/tpl/images/cats/fizika.png)
Physics, 17.08.2021 23:30
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/biologiya.png)
Biology, 17.08.2021 23:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 17.08.2021 23:30
![question](/tpl/images/cats/ekonomika.png)