A sample of nickel absorbs 483 J of energy when the temperature increases from 13.8 °C to 26.8 °C. What is the mass of the sample? The heat capacity (c) is 0.444 J/g °C for nickel.

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?

Once similarity and one difference between a mixture of elements and a mixture of compounds

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?