MASS-VOLUME 1. What is the mass of calcium carbonate must be heated to form 200 L of carbon dioxide? 2. 230 g of sodium metal was dropped in a known amount of cold water. Determine the amount of hydrogen gas in terms of volume that is produced in this reaction. 3. What volume of hydrogen at STP will be produced by the electrolysis of 180 g water? 4. Zinc sulfide reacts with oxygen to give zinc oxide and sulfur dioxide. What volume at STP of SO₂ will be given off by 435 g of zinc sulfide? 5. 2 g of sulfur is burned in oxygen. How many liters at STP of sulfur dioxide was formed?

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Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.