Mass of beaker and HCl solution	83.45 grams
Mass of empty beaker	40.14 grams
Mass of crucible and powdered calcium carbonate	92.23 grams
Mass of acid solution added	83.45 - 40.14 = 43.31 grams
Starting mass	43.31 + 92.23 = 135.54 grams
Final mass	133.87 grams
Mass of carbon dioxide	1.67 grams.

Calculate the mole of carbon dioxide given off.

Calculate the mass of calcium carbonate that must have been placed in

the crucible.

1.03 grams of calcium carbonate are placed in a crucible with excess acid and the total mass recorded at 104.56 grams. The crucible is allowed to stand for several hours. Calculate the final mass of the crucible and its contents.