Cuando 27.5 g hierro (PmFe=55g/mol, PmCl=35.5g/mol PmH=1 g/mol) reacciona con una disolución 0.5M de äcido clorhídrico, da dicloruro de hierro (FeCl2) y desprende hidrógeno molecular.(H2) a) Escribe y ajusta la reacción química
b)Calcula el número de moles de hierro que reaccionan.
c) Calcula el volumen de disolución necesario
d)Calcula la masa de sal que se produce d)Calcula el volumen de gas que se desprende

Why is nh3 classified as a polar molecule

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?

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg