You measure the final mass of a product as {x}. The theoretical yield was {y}. What is the percent yield of the product? Give your answer to 1 decimal place. May 1, 2026 View Answer
You add {x} grams of anhydrous magnesium sulfate to {y} grams of sodium carbonate. What is the theoretical yield of the solid precipitate product? Give your answer to 3 decimal places May 1, 2026 View Answer
You add a solution of sodium chloride to a solution of a soluble unknown ionic compound. After mixing, you observe a precipitate product. Which of the following could be the identity of the unknown ionic compound? May 1, 2026 View Answer
You test several new known ions and create a solubility table. Soluble Exceptions Bv+, Jh+ PO43- Fg2- group 1 cations Insoluble Exceptions Ks3+ group 16 anions Gw2- Mg2+, Be2+ Based on your results, which of the follow ionic compounds should be soluble? May 1, 2026 View Answer
You add solid iron (a black color) to a light blue solution of copper nitrate. After a few minutes, the solution turns a brown color and the solid metal in the solution turns a orangish red. In this reaction _______ was reduced and _______ was oxidized May 1, 2026 View Answer
You need to make {x} milliliters of a solution with a concentration of {y} M using a stock solution with a concentration of {z} M. How many milliliters of the stock solution will you need? Give your answer to 3 decimal places. May 1, 2026 View Answer
You perform a water percent experiment on a sample of hydrated calcium chloride. The hydrated CaCl2•xH2O mass was {x}. The dehydrated CaCl2 has a mass of {y}. How many moles of anhydrous calcium chloride CaCl2 were in the samples? Give your answer to at least three decimal places. May 1, 2026 View Answer
You dry a hydrated salt to determine the percent water in the salt using an experiment identical to the epsom salt experiment. The original mass of the hydrated salt was {x} grams. You find that you have removed {y} grams of water during the drying process. What is the percent by mass of water in the original hydrated salt sample? Give your answer to one decimal place. May 1, 2026 View Answer
You perform an experiment to the epsom salt drying experiment on a sample of hydrated calcium chloride. The mass of the salt before drying was {x} grams. The final, constant mass of the salt after drying was {y} grams. What mass of water was removed from the salt during the drying process? Give your answer to 3 decimal places. May 1, 2026 View Answer