Calculate the force of attraction between a Ca2 and an O2- ion the centers of which are separated by a distance of 1.25 nm. Express your answer in N in engineering notation to three significant figures. Do not include the units in your answer.

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

What substance has a mass of 9.5g and volume of 2.1cm^3

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: