1A. Determine the molecular weights of the three dyes (Yellow #5, Blue #1, and Red 40) used in this experiment.

B. Stock concentrations of the food dyes are prepared as follows: 0.26 g Yellow #5 in 100 mL, 0.081 g Blue #1 in 100 mL, and 0.32 g Red 40 in 100 mL. Calculate the concentration in mole/L (M) for each stock concentration of dye.

C. If 4 mL of the stock concentration of Red 40 (Q#2) was diluted to a final volume of 50 mL, what is the concentration (mg/mL) of the diluted solution?