At 298 K, the formation of ammonia has a negative ΔS°sys; N2(g) + 3H2(g) → 2NH3(g); ΔS°sys = –197 J/K
Calculate ΔS°univ, and state whether the reaction occurs spontaneously at this temperature.

What happens to energy in an open system?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate