In manufacture of chlorine, feed containing hydrochloric acid gas and air are fed to the reactor. the product gases leaving the reactor are found to contain 13.2% hcl, 6.3% 02, 42.9% n2, 30% cl2 and 7.6% h2o (by weight). calculate:
i) the percent excess air used.
ii) the composition of gases entering reactor
iii) the degree of completion of oxidation (conversion)
(hint: start solving by change the mass flow rate to mol flow rate first.)

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

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?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand