What are the effect of having an impurity in your sample? (choose all that apply) It decreases the melting point
Two separate melting points are now observed
It increases the range of the melting point
Two separate boiling points are now observed
It increases the boiling point
It decreases the boiling point
It decreases the range of the melting point
It increases the melting point

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?

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene

What is the most important factor in determining climates.