Why does the flame go out on the Bunsen burner when the gas is turned off? (use the collision theory in your answer)

If you want to create an electrical current, which situation would produce a solution capable of this

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)