Helium why do some beacons have 18 witnesses and some with only 4

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Salt in oceans comes from and of rocks