5. Différentes formules d'un alcool Un composé (A) de formule CHOy, à chaine
carbonée saturée, présente les particularités suivantes:
son atomicité est égale à 12
le pourcentage massique d'oxygène vaut 2 fois celui
d'hydrogène
sa densité de vapeur est d 2,07
a) Trouver la formule brute de (A).
b) Déterminer ses formules semi-développées sachant
qu'il renferme le groupe hydroxyde - OH,
caractéristique de la fonction alcool.
o Déduire les formules topologiques de (5).
M(O) = 12 g. mol-:; M(O) = 16 g. mol​

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls

Remember to use the proper number of significant figures and leading zeros in all calculations. gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

Plz mark brainliest 30 points1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s.2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?