Methane burns in oxygen to produce carbon dioxide and water. which of the following represents a preliminary, unbalanced equation with the correct chemical formulas?

a.
ch4 + o2 → co2 + h2o

b.
ch4 + co2 → o2 + h2o

c.
co2 + h2o → ch4 + o2

d.
ch4 → o2 + co2 + h2o

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

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?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp