How many grams of propane, C3H8, are needed to make 140 grams of water?

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

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?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles