LiOH and NaOH can each react with CO2 to form the metal carbonate and H2O. These reactions can be used to remove CO2 from the air in a spacecraft. a. Write a balanced equation for each reaction. b. Calculate the grams of NaOH and of LiOH that remove 288 g CO2 from the air. c. NaOH is less expensive per mole than LiOH. Based on your calculations, explain why LiOH is used during shuttle missions rather than NaOH.
Chemistry Lecture Notes 11/15/16 Polymers Plastic, foam, nylon Large chain molecules made up of monomers (smaller molecules) We use plastic rather than glass bottles today (safer, require less materials) Glass is heavier and would cost more to transfer Recycled water bottles do not get reused for food grade plastic Plastic materials can be made to flow under heat and pressure (plasticity, ability to change shape) Natural Polymers Silk (we create synthetic substitute as well) Wool Starch (glucose monomers) ex. Pasta complex carb Wood (cellulose monomer) Protein (amino acid) DNA, RNA (nucleotides) Cotton (Cellulose) Synthetic Polymers Polyethylene (Ethylene-2 carbon w/ double bond+4 hydrogen) Ethylene derived from petroleum Synthesis: ethylene-US 20
