Can someone please help me with #1 or #2

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]

Which metals are called noble metals

How many moles of bromine are needed to produce 3.23 moles of potassium bromide