The number of protons is equal to: a. the energy levels
b. the atomic number
c. the number of neutrons
d. the periodic table groups

Air can be considered a mixture. which statement does not explain why?

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:

Which method would be best to separate a mixture of sand and gravel