For a 500 mL solution containing 80g of C2H4O2, calculate the following:
a. Molarity
b. Concentration as a weight per volume
a) 0.5 M, 160 g/L
b) 1 M, 80 g/L
c) 2 M, 40 g/L
d) 0.2 M, 200 g/L