Calculate the δhrxn for the following reaction:
ch4 (g) + 2cl2 (g) --> ch2cl2 (g) + 2hcl (g)
use the following reaction and given δh's:
ch4 (g) + cl2 (g) --> ch3cl (g) + hcl (g), δh = -99.60 kj
ch3cl (g) + cl2 (g) --> ch2cl2 (g) + hcl (g), δh = -105.8 kj

What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m

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?

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.