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

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

What is one real world example of a colligative property?

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves