In considering the wavelength (λ) of a wave: a. with low frequencies, you get a long wave
b. wavelength can only be calculated when the density of the medium is known
c. with low frequencies, you get short wavelengths
d. with high frequencies, you get long wavelengths

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

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 is an endothermic reaction identified