A chemical compound has a half-life of 12 hours. You noticed that after 42 hours, there was 325 mg of it remaining. How much of the compound did you have 42 hours ago?

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize