Exercice N°2 :
Le noyau d'un atome d'aluminium possède 13 protons et 27
nucléons.
1- Donn...
![subject](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 10.03.2021 02:50 Paytonsmommy09
Exercice N°2 :
Le noyau d'un atome d'aluminium possède 13 protons et 27
nucléons.
1- Donner sa représentation symbolique.
2- Donner la composition de cet atome.
3- Donner la structure électronique de cet atome et le nombre
d'électrons sur sa couche externe.
4- Calculer sa masse approchée.
5- Donner le nombre d'atomes d'aluminium contenus dans un
échantillon de masse m= 1,0 g.
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Social Studies
![image](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.06.2019 11:30, drainy0uandthefish
Me with this psychology homework, i’m struggling with it.
Answers: 1
![image](/tpl/images/cats/obshestvoznanie.png)
![image](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 22.06.2019 17:30, babyduckies37
The platt amendment of 1901 forbade cuba from entering into any treaties that would allow undue foreign involvement in cuban affairs. this law was passed after the spanish-american war to make sure that european nations weren’t going to get involved with cuba. 1, why might the platt amendment be considered ironic? 2, what reasons would the united states have for not wanting european influence in cuba?
Answers: 1
![image](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 23.06.2019 09:00, plexusgirl84
Research the topic, classifications of business, then write four to six paragraphs explaining which classifications of business you utilize in your day-to-day life. incorporate at least four types and illustrate how they translate into your daily life. use complete sentences and proper paragraph form. (follow apa style.)
Answers: 2
You know the right answer?
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/fizika.png)
Physics, 23.09.2019 20:30
![Konu](/tpl/images/cats/health.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 23.09.2019 20:30
![Konu](/tpl/images/cats/health.png)
Health, 23.09.2019 20:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 23.09.2019 20:30
![Konu](/tpl/images/cats/fizika.png)
Physics, 23.09.2019 20:30
![Konu](/tpl/images/cats/mat.png)
Mathematics, 23.09.2019 20:30
![Konu](/tpl/images/cats/en.png)