Question

question 5 6 pts the following reaction: h₂ + i₂ → 2hi, is an example of combination. decomposition. single - displacement. double - displacement. question 6 6 pts the following reaction: ca + 2h₂o → ca(oh)₂ + h₂, is an example of combination. decomposition. single - replacement. double - displacement.

Explanation:

For Question 5, in a combination reaction, two or more substances combine to form a single product. Here, hydrogen ($H_2$) and iodine ($I_2$) combine to form hydrogen - iodide ($HI$). For Question 6, in a single - replacement reaction, one element replaces another element in a compound. Calcium ($Ca$) replaces hydrogen in water ($H_2O$) to form calcium hydroxide ($Ca(OH)_2$) and hydrogen gas ($H_2$).

Answer:

Question 5: combination.
Question 6: single - replacement.