Potassium chloride crystallizes in the rock salt structure. Estimate the density of potassium chloride using the following ionic radii: r(K+)=133 pm, r (Cl-)= 181

What is the number of atoms in 3.54 mol s

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:

How many valence electrons are in atom of radon?