Scientists used blank

dating to determine Earth's age.

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]

How many neutrons does a atom of cobalt have?

The boiling point of liquids is very high what does it indicate