2.0 mg phenol/ 60min/ 100mL (molecular weight of phenol = 94) is expressed as how many IU?

Calculate the pH of an acetate buffer composed of 0.30  M sodium and 0.10 M acetic acid (pKa for acetic acid is 4.76)

The absorbance of an unknown is 0.35. The absorbance of the 6 mg/L standard is 0.20. Calculate the concentration of the unknown.

Determine the logs for each of the following: 860 475,000 0.00098 0.03777

Give the number of significant figures in each of the following numbers:

If there are 5 g of a solute in 20 mL of a solution, how much solute would be present in 100 mL of solution?

Convert the following to the corresponding Celsius or Fahrenheit scale. 37.5oC 100oC -20oC 40oF 72oF

Determine the antilogs for each of the following: 2.48 1.91 3.455

The concentration of a protein stock solution is 10 g/dL. A clinical laboratory scientist combines 50 uL of stock solution with 9.95 mL of distilled water. What is the concentration of the dilution? (Remember: volumes must be in the same units)

How many grams of FeCl3 are needed to make 1 L of 2 M solution? (Molecular weight Fe= 55.8, Cl= 35.4)