Magnesium (mg) is a valuable metal used in alloys, in batteries, and in chemical synthesis. it is obtained mostly from seawater, which contains about 1.3 g of mg for every kilogram of seawater. calculate the volume of seawater (in liters) needed to extract 8.0 x 104 tons of mg, which is roughly the annual production in the united states. (rho seawater = 1.03 g/ml).

Plz mark brainliest 30 points 1) 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?