Answer:
Single replacement reaction (aka single displacement reaction)
Explanation:
In a single replacement reaction, one element is substituted for another in a compound to create a new compound and a new element in the products. The general form is:
A + BC --> B + AC
In the case of this question, Cr and Fe "trade places."
Cause limestone breaks down dirt and stone
The answer is true the si base unit for mass is the gram
False, in converting between units, it is never necessary to use more than one conversion factor.
