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.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons

How many neutrons does an element have if its atomic number is 50 and its mass number is 166