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.

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

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

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