Calculate the amount of ConA stock you need in a case if you want ConA concentration of 30 µg/ml, and you want to plate 3 wells in a final volume of 100 ug/ml. You will add ConA in 50 ul/well. The stock ConA 1 mg/ml

Six 50.0 ml volumetric flask 1 through 6 are labeled. 10.00 ml of 2.00 x 10-1 M Fe(NO3)3 solution was then pipet into each volumetric flask. A 1.00,2.00,3.00,4.00 and 5.00ml of 2.00 x 10-3M NaSCN solution was then pipetted to flask 2 through 6 respectively. A sufficient amount of 0.10 M nitric acid was then added to each flask to make each a total volume of 50.00ml. Hint M1V1=M2V2 a)what would be the concentration of Fe(NO3)3 in 0.10M HNO3? b)what would be the concentration of NaSCN in 0.10M HNO3?

A sample of an industrial waste water is analyzed and found to contain 48.6 ppb Ni2+. How many grams of nickel could be recovered from 1.88×103 kg of this waste water? _____grams Ni

.. A solution of NaOH has a oxalic acid (MW 126.0) titer of 9.45 mg/mL. Calculate the normality of the NaOH solution. (Oxalic acid furnishes two hydrogen ions) Calculate the fllowing titors in ma/ml.