In a mechanical coal-wash process a portion of the inorganic sulfur and ash material in the coal can be removed. A feed stream to the process consists of 73% coal, 11% ash, 11% sulfur and 5% water. The clean-coal side of the process consists of 88% coal,6% sulfur, 3% ash and 3% water. The refuse side consists of 32% sulfur with the remainder being ash coal and water. If 80metric tons/hour of clean coal is required, determine the feed rate necessary for the mined coaland composition of the refuse material.

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

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?

Why does a plastic bottle that is sealed at a high altitude change it’s shape when taken to lower altitude