Consider the reaction: H2(g) + C2H4(g)---> C2H6(g)

Using standard absolute entropies at 298K, calculate the entropy change for the system when 1.82 moles of H2(g) react at standard conditions.
(delta)S°system = --- J/K

Why does his teacher ask him to balance the equation by including the correct coefficient

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.