Question

question 3 6 pts the following reaction: c + o₂ → co₂, is an example of combination. decomposition. single - displacement. double - displacement. question 4 6 pts the following reaction: f₂ + 2kbr→ 2kf + br₂, is an example of combination. decomposition. single - replacement. double - displacement.

Explanation:

For Question 3, in a combination reaction, two or more substances combine to form a single product. Here, carbon (C) and oxygen ($O_2$) combine to form carbon - dioxide ($CO_2$). For Question 4, in a single - replacement reaction, one element replaces another element in a compound. Fluorine ($F_2$) replaces bromine (Br) in potassium bromide (KBr) to form potassium fluoride (KF) and bromine ($Br_2$).

Answer:

Question 3: combination.
Question 4: single - replacement.