5 ul of a 10 to 1 dilution sample was added to 3mL of Bradford Reagent. The absorbance reading was 0.68. According to the standard curve (not shown) this represents 0.05 mg of protein. Determine the stock concentration of the protein solution. Answer should be in mg/mL

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3 2 kilopascals, what is the partial pressure of the hydrogen?