Halogens have electron affinity
a) exothermic
b) endothermic
c) positive
d) zero

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation:

Write a balanced equation showing the formation of copper (ii) nitrite from its elements

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released