7. Which compound is formed in an acid-base neutralization reaction? a. indicator b. ammonia c. ethanol d. water 8. Which of the following is a strong acid? a. chloric acid b. hydrofluoric acid c. phosphoric acid d. perchloric acid 9. What is the pOH value of a solution with pH 1? a. 1 b. 14 C. 6 d. 13 e. none of the above 10. Which of the following statements about pressure is FALSE? a. Pressure is caused by gas molecules colliding with surfaces. b. The atmosphere has a pressure as the components of air collide with surfaces. c. After creating a pressure difference, the atmospheric pressure can push liquids up a straw. d. The Sl unit of pressure is psi. 11. One liter of a gas is in a sealed chamber containing a moveable piston. If the piston is moved so that the volume of the gas is compressed to a volume of % liter, what will happen to the pressure of the gas? (Assume the temperature is constant and no gas particles are lost.) a. The pressure will remain the same. b. The pressure will be half the original value. C. The pressure will be twice the original value. d. It would be impossible to move the piston since gases are not compressible. 12. When must temperature values in gas law calculations be expressed in kelvin units? a. Only for Charles's law. b. Only for the Ideal Gas law. Never d. Always c