Rezolvati urmatoarele probleme, urgent, dau coroana 1. În 400 grame soluţie se găsesc 80 grame zahăr. Ce concentraţie procentuală are soluţia?
2. În 500 Kg soluţie sunt dizolvate 75 Kg sodă de rufe. Ce concentraţie procentuală are soluţia ?
3. Ce cantitate de soluţie de concentraţie 15% se obţine prin dizolvarea a 60 Kg piatră vânătă în apă ?

Iknow #2 is d. i just need to know why

Which best explains why an iceberg floats?

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?