Determine the molarity of a iron (II) nitrate aqueous solution that is 24% by mass. The density of the solution is 1.03 g/cm3
a. 0.00137 M
b. 1.37 M
c. 4.10 M
d. 4.35 M
e. 1.30 M

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity