Based on the cations identified in the question above, determine if the painting in question was a forgery. Explain how you were able to determine if the painting was a forgery. Indicate which pigments were likely in the unknown and when they were likely used. Note that each cation itself is not a pigment; the full chemical formula for each pigment can be found in the Pigment Handbook in your lab manual.

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.