A teacher demonstrates a decomposition reaction. Which would be a correct demonstration?
А
burning magnesium in the presence of oxygen to produce
magnesium oxide
B.
burning methane in the presence of oxygen to produce
carbon dioxide and water
running an electrical current through water to produce
hydrogen and oxygen
D
reacting iron with oxygen to produce iron(III) oxide

Elias is almost correct. he just got it backwards.the correct answer is that it demonstrates elastic potential energy transforming into kinetic energy.

What’s the question

Answers are 1,2,4 its correct on edgenuity.

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.