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.
​

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

What effect did the enclosure acts have on people’s working lives? a. changes brought about by the acts prevented large farmers from taking lands from smaller farmers. b. small farmers could no longer work on common lands and had to move to cities for work. c. peasants started working on enclosed lands and soon became wealthy because of higher wages. d. landowners forced peasants to build roads and bridges as part of the new enclosure laws.

Growth of the business (be sure to use the terms “culture” and “cultural diffusion” in this section.) of debbie fields. plz me