Calcium carbonate decomposes on heating as shown CaCO3 CaO + CO2. Theoretically, 35 g of calcium oxide was expected to be produced but only 7g of
calcium oxide was experimentally obtained. What is the percentage yield of calcium
oxide?
20
O 25
O 14
O 10

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices