(this question is from apex on course: physical science sem 2) which one of the following is an example of a composition reaction? a. 2na (s) + ci2 (g) → 2naci (s) b. zn (s) + 2hci (aq) → znci2 (aq + hz (g) c. cu (s) + 2agno3 (aq) → cu(no3)2(aq) + 2ag (s) d. caco3 (s) → cao (s) + o2 (g)

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Is the flow of energy during vaporizing more like the flow during melting or during freezing

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing