OF2 + H2O = O2 + HF particle diagram

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

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?