Hòa tan 6,5 g kẽm càn vừa đủ Vml ddHCl 2M
a) viết pthh

Smog is the term used to describe the combination of fog and smoke

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]

What is the independent variable in this investigation? mass volume sample number substance density