Data Analysis and Other Calculations Practice Test

25 mL of water at room temperature is vaporized and heated to 515 degrees Celsius in an open system.

What will the volume of the resulting gas be? Round your answer to the nearest liter.

3.2 g Zn and 8.1 g HCl are placed in an open beaker. As the reaction proceeds, the hydrogen gas is allowed to escape, causing the reaction to go to completion.

Which reactant (if either) is in excess, and how many grams of it remain?