Développées de b, c et d.
exercice n°6:
on réalise l'analyse d'un polymère obtenu par polyaddition. on constate qu'il contient, en
masse, 73,2% de chlore, 24,8% de carbone et 2% d'hydrogène.
1 quelle est la composition en masse du monomère m?
2 le polymère a une masse molaire moyenne de 121000 g. mol" et un degré de polymérisation
moyen de 1250. donner la formule brute de m.
3-indiquer toutes les formules développées possibles pour m.
6c
4-donner, dans chaque cas, le motif et le nom du polymère.
el
2019-2020
lycée de cettene ndo
prof: mohamed/sidelle
lycée d'excellence ndb

name

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

Identify some abiotic characteristics of the tundra biome.

A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping. the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?