Prove that the AHi' for BrF is the same when calculated with Hess's Law and sum of the AH' for BrF 1. The AH for the following reaction equals -89 kJ:
BrF, + Br2 - BrFs + 2 BrF
In addition, these two standard enthalpies of formation are known: BrF, = -941 kJ and BrFs = -840 kJ
Determine the AH; for Brf.
2. Here are all three data reactions written out in equation form:
and here is the target equation: 2Br2 +/F2 - Brf AH = ?
Br2+2F2 - Brf, AH = -941 kJ
Br2 +F2 - BrFs AH, = -840 kJ
BrF,+Bra - Brfs + 2 BrF AH = -89 kJ

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?