Ammonium sulphate;(NH2),504, is an inorganic salt with a number of commercial uses. The most common use is as a soil fertilizer. The density of 12.5 molal
(NH4)2SO4 solution is 1.77 g/mL at 25 °C. Calculate:
(a) the mole fraction of (NH4)2SO, 0.1837
(b) the molarity of (NH4)2SO4. 8.35M
(c) the percentage by mass of (NH.)2SO4. 62.282

How much energy moves onto the next level, in an energy pyramid

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?

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.