Consider the following problem:

"ammonia, nh3, is used as a fertilizer and as a refrigerant. what is the new pressure if 5 moles of ammonia with a volume of 750 ml at 1.50 atm is expanded to 7.50 l at constant temperature? "

in solving this with the ideal gas law, which r value will you use?

a. 8.31 l * kpa / k * mol
b. 0.0821 l * atm / k * mol
c. it doesn't matter which i choose for this problem, either of them will produce a correct answer.

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34

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?

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.