Determine the energy value for the combustion of butane, using the bond energies from the table. Respond in terms of the energy value (not the enthalpy change, the sign is important here). Answer to 3 significant figures in units of kJ/mol. C 4H 10 + 6.5O 2 → 4CO 2 + 5H 2O

Bond Bond Energy (kJ/mol)
H–H 432
O=O 494
O–H 460
C–H 410
C–O 360
C=O 799
C≡O 1071
C–C 347
C=C 611
C=C, aromatic 519
N=O 623
N≡N 941

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?

Determine the reaction and balance the following equations urgent due in the morning

Choose all the answers that apply. fluorine (f) has an atomic number of 9 and an atomic weight of 18.99. fluorine has a. 9 protons b. 10 neutrons c. 18 electrons d. an atomic mass of 19 e. at least one isotope