BeautyxQueen
16.09.2021 •
Chemistry
Can someone helpful answer the question please?
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Ответ:
type of surface
Explanation:
The independent variable is the variable that doesn't depend on anything else. The dependent variable would be the time in seconds because that depends on the independent variable which is the type of surface.
hope this helps :)
Ответ:
Can vary. Carbon is used quite commonly, and extracts metal oxides, works with zinc, iron, tin, lead and copper.