Données : Masses molaires atomiques (en g/mol) pour H: 1;C: 12;N: 14; 0:16; Na : 23 ;
S:32;K: 39,1 ; Ca : 40 ; Cu : 63,5 ;
Vous pouvez également vous aider de la classification périodique des éléments.
Exercice 1
Un engrais contient du nitrate d'ammonium de formule NH. NO..
1) Calculer la masse molaire de ce composé ionique.
M= 2x+4 + 14 x 1 + 3x16=800
2) Un sac d'engrais contient 150 g de nitrate d'ammonium. Calculer la quantité de matière
de ce composé ionique contenu dans ce sac.​

Nous allons à (blank) de lyon. fill in blank plz

Can anyone translate this into french! ? (some of it’s translated but not everything) c - bonjour mademoiselle! comment allez-vous? s - bien! c - do you have need for assistance? s - oui, i have need for pencils c - i have pencils j - maman! i have need for bonbon s - non jonny, we are here for school supplies. j - but, i have need for candy. sofia and i are going to eat it. s - non, jonny. we have need for a backpack c - i have a backpack s - do you also have paper c - oui, i have paper j - maman, we are going to be late s- we are not going to be late, we have time. c - are you interested in this we have other variations. s - non, we already have that. c - we have a sale on this. s - non, merci j - i have need for that s - non jonny j - but we are in need of it. s - non jonny j - but we s - non j - d’ d’accord.. s - i’m sorry sir, i have need for erasers j - but have that. s - no you don’t. j - i have it. s - no, you don’t. j - d’ *mumbles* i have s - are you done? (jonny keeps mumbling) s - are you? j - c - are you interested in anything else? we are currently s - a sale. oui. i know. are you going to show me where the erasers are? or not. j - *mocks* are you going to show us where the erasers are or not? c - are you interested s - c- but we are.. s - having a sale! ? c - we end.

Roles of three employees in the agriculture, food, and natural resources cluster are given in this chart. which best describes the pathways of these three individuals? alana works in plant systems, louis works in animal systems, and fred works in natural resources. alana works in food processing systems, louis works in agribusiness, and fred works in natural resource systems. alana works in food processing systems, louis works in animal systems, and fred works in environmental services. alana works in the natural resource system, louis works in food product systems, and fred works in environmental services.