Unit 6 Reading Assignment |64 Questions| With Correct Answers.

Match each type of energy-producing technology to the correct description. {Ans: 1.H2 is the fuel in-->a hydrogen fuel cell 2. Hydrocarbon fuels are used in-->a combustion engine 3. A combustion engine produces-->CO, CO2, H2O, and energy. 4. A hydrogen fuel cell produces-->H2O and electricity.}Which of the following options correctly describe cell voltage? Select all that apply. {Ans: -Cell voltage is a function of the chemicals used to construct the battery. -Some cells can last as long as ten years. -Higher voltages are possible by connecting cells.}Consider the following two balanced cell half-reactions: Cl2 (g) + 2 e- → 2 Cl- (aq) S2- (aq) → S (s) + 2 e- What is the overall balanced cell equation? {Ans: Cl2 (g) + S2- (aq) → 2 Cl- (aq) + S (s)}The main disadvantage in using hydrogen as a fuel source is its _____. {Ans: flammability}Match each type of electrochemical cell with the correct description {Ans: 1. a fuel cell --> utilizes an external source of fuel and oxidant. 2. a conventional battery--> requires no external source of fuel or oxidant. 3. The electrodes participate in reactions--> in a conventional battery. 4. The electrodes simply serve as conductors-->