It is said the reason the USS Yorktown survived the Battle of the Coral Sea was because of a chemical that is as common as the air we breath. This chemical saved many aircraft carriers and airplanes during WWII (and consequently lives). The chemical is also of grave concern to us today because elevation of this chemical has been increasing since the 1960's. Yet historical data show that this chemical always increase and decrease in a ~ 20,000 year cycle.

Gusing the milligrams of ascorbic acid you entered above, the ratio of total sample volume to aliquot volume, and the total milligrams of the vitamin c tablet that you dissolved, calculate the mass of ascorbic acid in the vitamin c tablet for each trial. do this by scaling up to find the amount (mg) of ascorbic acid in your 250 ml flask. enter your calculated mass of ascorbic acid in the vitamin c tablet, for each trial. be sure to enter your calculated mass in the corresponding order that you entered your milligrams of ascorbic acid. the milligrams of ascorbic acid you entered for entry #1 previously should correspond to the mass of ascorbic acid that you enter for entry #1 here.