now using your periodic table as a reference type the symbols for the known elements into the appropriate groups and periods in a modified table below note that were using the international group numbers one through 18 followed by the American scheme for the a group elements in parentheses

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 grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation: