3. Match the best answer from the list of items related to today's experiment. Answers are to be used only once. (3 points) ANSWERS a. 1atm b. The reaction of HCl with aluminum is a reaction. c. a strong acid d. subtracted from the barometric pressure to obtain the pressure of dry H2 gas e. n in the Ideal Gas Law f. number of moles of hydrogen gas produced from one mole of aluminum and excess hydrochloric acid LIST OF ANSWERS 1. 1mmHg 7. one 13. vapor pressure of H2O 2. 760mmHg 8. NaOH 14. moles 3. precipitation 9. barometric pressure 15. 1/2 4. 3/2 10. two 16. molH2 per gram of sample 5. HCl 11. redox 17. volume 6. acid-base 12. 760atm 18. number of molecules