A laboratory procedure requires 50.0 mL of 0.25 M HCI solution. The HCI in the acid storage is 1.0 M. How many mL of the 1.0 M solution do you need to dilute to get the molarity that you need?

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