On brule un morceau de PVC dans une quantité suffisante de dioxygène . 1) Donner les formules des produits de cette combustion .

2) Quel est le volume de l’air nécessaire pour bruler 6,3 g de PVC sachant

que la combustion de 2900 mg de ce plastique nécessite 3 L de

dioxygène ?

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.